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A tumbler with convertible lid and coaster and methods of use thereof are described. A tumbler comprises a brim, the brim defining an open end of the tumbler, an exterior side wall, an interior side wall comprising a tumbler lug, and a bottom portion comprising a tumbler bottom groove. A convertible

A tumbler with convertible lid and coaster and methods of use thereof are described. A tumbler comprises a brim, the brim defining an open end of the tumbler, an exterior side wall, an interior side wall comprising a tumbler lug, and a bottom portion comprising a tumbler bottom groove. A convertible lid and coaster comprises a top surface, the top surface further comprises a finger recess, a securable straw hole coupled with the convertible lid and coaster, a side edge comprising a convertible lid and coaster groove, and a bottom surface comprising a recessed opening, the recessed opening comprising a lid and coaster lug.

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The invention claimed is: 1. A tumbler with convertible lid and coaster device comprising: a tumbler comprising: a brim, the brim defining an open end of the tumbler; an exterior side wall comprising a bottom portion opposite the brim, the bottom portion comprising a plurality of internally recessi

The invention claimed is: 1. A tumbler with convertible lid and coaster device comprising: a tumbler comprising: a brim, the brim defining an open end of the tumbler; an exterior side wall comprising a bottom portion opposite the brim, the bottom portion comprising a plurality of internally recessing tumbler grooves; and an interior side wall comprising a plurality of tumbler lugs extending inward therefrom; and a convertible lid and coaster comprising: a top surface, the top surface further comprising a finger recess; and a securable straw hole through the convertible lid and coaster; a skirt extending down from the top surface to a bottom edge and comprising an external surface comprising a plurality of angled coaster grooves extending upward from the bottom edge, and the skirt comprising an internal surface comprising a plurality of coaster lugs extending inward from the internal surface nearer the bottom edge than the top surface; wherein the plurality of tumbler lugs engage the plurality of coaster grooves when the convertible lid and coaster is threaded into the open end of the tumbler, and the plurality of coaster lugs engage the plurality of tumbler grooves when the convertible lid and coaster is threaded onto the bottom portion of the tumbler. 2. The device of claim 1, wherein the plurality of tumbler grooves and the plurality of coaster grooves are tapered. 3. The device of claim 1, wherein the top surface of the convertible lid and coaster comprises a sliding tab and the securable straw hole is disposed in the sliding tab. 4. The device of claim 1, wherein the plurality of tumbler lugs removably and lockingly fit between the tumbler and the convertible lid and coaster when each of the plurality of tumbler lugs is wedged within a narrow portion of each of the plurality of coaster grooves. 5. The device of claim 4, wherein the plurality of tumbler lugs become un-wedged from within the narrow portions of the plurality of coaster grooves when each of the plurality of tumbler lugs is moved towards a broad portion of each of the plurality of coaster grooves. 6. The device of claim 1, wherein the plurality of coaster lugs removably and lockingly fit between the tumbler and the convertible lid and coaster when the each of the plurality of coaster lugs is wedged within a narrow portion of each of the plurality of tumbler grooves. 7. The device of claim 6, wherein the plurality of coaster lugs become un-wedged from within the narrow portions of the plurality of tumbler grooves when each of the plurality of coaster lugs is moved towards a broad portion of each of the plurality of coaster grooves. 8. The device of claim 1, wherein the convertible lid and coaster can be removably coupled within the open end of the tumbler. 9. The device of claim 8, wherein when the convertible lid and coaster is removably coupled within the open end of the tumbler, the top surface of the convertible lid and coaster is substantially flush with the brim of the tumbler. 10. The device of claim 1, wherein the convertible lid and coaster can be removably coupled with the bottom portion of a tumbler. 11. The device of claim 10, wherein when the convertible lid and coaster is removably coupled with the bottom portion of the tumbler, at least a portion of the bottom portion of the tumbler resides within a recess of the convertible lid and coaster.