My friend asked me for a soda cup keychain, so here it is! I figured some folks might like to customize it with a funky pattern, or just cool filament. 

It's about 5,5 cm tall. There are two versions, one with a piece to use as a keychain, and one plain as a mini. I do recommend making sure the straw part is filled 100% with filament. 

If you want to use it as an actual keychain and carry it around, I suggest thinking about some reinforcement for the straw. I couldn't really make it thicker, or it would lose its proportions. Maybe a layer of resin would help to make it more durable?