Illuminated coaster

An illuminated coaster for a translucent beverage container with a sidewall and a bottom, which coaster includes:

• a base assembly including a body with upper and lower ends and a generally frusto-conical sidewall with an exterior surface, said sidewall enclosing a compartment;
• said base assembly further including a generally tubular sleeve with upper and lower open ends and a generally tubular configuration forming an upwardly-open container receiver adapted to receive said container bottom and sidewall adjacent to said container bottom, said sleeve comprising an insulative, resilient foam material and including multiple ribs projecting inwardly into said receiver;
• said base assembly further including a bottom plate adapted for selectively covering said body lower end;
• a bottom plate mounting mechanism including multiple lugs on said body sidewall projecting into said compartment and multiple hooks extending upwardly from said bottom plate and adapted for selectively engaging respective said lugs;
• and
• a lighting system including a power source comprising a battery container mounted in said compartment and including multiple battery receivers each adapted to receive a respective battery, a lens mounted in said body upper end at said sleeve lower end, a reflector mounted in said compartment below said lens, said reflector being oriented generally upwardly, a socket and bulb mounted in said reflector and selectively connected to said power source and a switch mounted on said body sidewall and accessible at the exterior surface thereof, said switch having a closed positioned connecting said power source and said bulb and an open position disconnecting same.