Tumbler/Cold Cup Straw Cover

thingiverse

I designed this adapter for the reusable straw (~8mm diameter) of a Starbucks cold cup, unsure if it's universal or not. The size of the hole on the lid isn't standardized, so I didn't attempt to secure the straw through that opening. This design is straightforward, so please disregard my print quality; I used subpar filament :P To print this adapter, use 100% infill with no supports. I recommend orienting the open side upwards for best results. I printed it with PLA, but TPU might be an even better choice.