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A toolbox comprises a rigid case having an open top side providing access to an internal case storage volume therein, and a rigid cover with an open bottom side open to a cover storage volume. The cover is fixed with the case at a plurality of hinges. A removable message board and marking implement

A toolbox comprises a rigid case having an open top side providing access to an internal case storage volume therein, and a rigid cover with an open bottom side open to a cover storage volume. The cover is fixed with the case at a plurality of hinges. A removable message board and marking implement are selectively fixed within the cover storage volume of the cover. The rear side of the case includes winding posts around which a power cord is wound that conducts power to a power strip circuit having a plurality of power receptacles fixed with the case. An audio system is fixed with the case and includes a plurality of speakers, a display interface, a wireless audio signal receiver, and a control circuit. An optional bottle opener and removable lamp device may be further included.

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1. A toolbox, comprising: a rigid case having a front, rear, left, right, top and bottom sides, the top side open to a case storage volume therein that includes at least one tray ledge below the open top side thereof;a rigid cover having front, rear, left, right, top and bottom sides, the bottom sid

1. A toolbox, comprising: a rigid case having a front, rear, left, right, top and bottom sides, the top side open to a case storage volume therein that includes at least one tray ledge below the open top side thereof;a rigid cover having front, rear, left, right, top and bottom sides, the bottom side open to a cover storage volume therein, the rear side fixed proximate the open bottom side with the rear side of the case proximate the open top side of the case at a plurality of hinges, the cover being moveable between an open position providing access to the case storage volume and the cover storage volume and a closed position for closing the case;at least one two-part clasp mechanism fixed with the front sides of the cover and case operates to selectively secure the cover in the closed position;a removable tray having at least one handle and adapted to rest on the at least one tray ledge of the case without contacting the cover when the cover is in the closed position;a power cord receptacle fixed through the case, adapted to receive therein a connector of a power cord, the power cord receptacle conducting power to a power strip circuit having a plurality of power receptacles fixed through the case;an audio system fixed with the case and including a plurality of speakers, a display interface, and a control circuit that receives power from the power strip circuit, the control circuit including a wireless audio signal receiver. 2. The toolbox of claim 1 wherein at least one of the sides of the case includes a handle and an opposing side of the case and/or the bottom side of the case includes two wheels, whereby the toolbox may be rolled along a ground surface by a user holding the handle and tilting the toolbox so that the toolbox is supported on the ground surface by the wheels. 3. The toolbox of claim 2 wherein two wheel wells are formed into the opposing side of the case and/or the bottom side of the case, one of the wheels being fixed within each wheel well. 4. The toolbox of claim 2 wherein the handle is pivotally fixed with the side of the case. 5. The toolbox of claim 1 further including a message board retaining mechanism fixed within the cover storage volume of the cover and adapted to selectively retain a removable message board therein, the cover storage volume further including at least one marking implement holder for selectively retaining a marking implement. 6. The toolbox of claim 5 wherein the top side of the cover includes a portable electronic device support recess adapted to hold a portable electronic device upright therein when the toolbox is resting on a horizontal surface. 7. The toolbox of claim 1 further including a bottle opener fixed with the case. 8. The toolbox of claim 1 further including a bottle opener fixed with the audio system. 9. The toolbox of claim 1 wherein the audio system further includes at least one battery electrically connected with the control circuit, and wherein the power strip circuit includes a transforming means for providing a low-voltage power source to recharge the at least one battery of the audio system. 10. The toolbox of claim 1 wherein the audio system further includes at least one USB slot electrically connected with the control circuit for supplying power to the at least one USB slot. 11. The toolbox of claim 10 wherein the control circuit is adapted to receive an audio signal through the at least one USB slot. 12. The toolbox of claim 1 further including a lamp device selectively removable from a lamp holder of the case, the lamp device including a battery and at least one lamp or LED, the lamp device able to illuminate the case and cover storage volumes when the cover is in the open position. 13. The toolbox of claim 12 wherein the lamp holder includes power contacts electrically connected to the battery of the lamp device when the lamp device is retained within the lamp holder, the power contacts of the lamp holder electrically connected with the power strip circuit. 14. The toolbox of claim 9 further including a lamp device selectively removable from a lamp holder of the case, the lamp device including a battery and at least one lamp or LED, the lamp device able to illuminate the case and cover storage volumes when the cover is in the open position, the lamp holder including power contacts electrically connected to the battery of the lamp device when the lamp device is retained within the lamp holder, the power contacts of the lamp holder electrically connected with the battery of the audio system. 15. The toolbox of claim 1 further including an external storage volume fixed within the audio system and covered with a spring-biased external storage volume cover. 16. The toolbox of claim 9 further including an external storage volume fixed within the audio system and covered with a spring-biased external storage volume cover, wherein the external storage volume includes a battery compartment for the battery of the audio system. 17. The toolbox of claim 1 wherein the control circuit of the audio system further includes an on/off switch for selectively activating and deactivating the audio system, the control circuit further including a clock circuit for displaying the current time on the display interface. 18. The toolbox of claim 1 wherein the rear side of the case further includes at least two winding posts around which the power cord may be wound and secured. 19. The toolbox of claim 1 further including an electrical receptacle cover that is urged by a biasing means to cover the plurality of electrical receptacles. 20. The toolbox of claim 1 further including at least one magnet embedded in the case and/or cover for selectively retaining magnetically attractive objects on the case and/or cover.