Ice Coaster

Sick of ice cubes melting in your drink and diluting it? Thats not a problem with the Ice Coaster, like a regular coaster but filled with ice. Fill the coaster up with water up to about 2/3rds of the way, then twist on the cap. Put it in the fridge until it freezes, and take it out whenever you need a cold drink! I recommend rubbing a thin layer of cooking oil on the insides of the cap so it twists off easier after defrosting. Alternatively, just wait a few minutes after defrosting until its partially melted. This design shouldn't leak any water, but I recommend using it with a regular coaster just in case.