I wanted a simple lid for my Stanley straw, but I couldn’t find anything that looked quite like what I had in mind, so I decided to make one myself in Blender. That’s how the Stanley Straw Cap was born, a clean, minimalist, adjustable lid that fits right on your straw. There are two versions: one for the standard 40oz Stanley and a smaller one for the 14oz size.
 

The idea was to keep it simple and functional, but also give it a little subtle style. It fits snugly on your straw, keeps dust and debris out, and gives your tumbler a slightly more polished look without overdoing it. It’s minimal, but it makes a difference when you’re sipping throughout the day.
 

A few printing tips: this is made for TPU, which is flexible and lets the lid grip the straw securely without slipping or cracking. Make sure to use a 0.6 mm nozzle to avoid clogs, because TPU can be tricky sometimes. Also, TPU loves to soak up moisture from the air, which can mess with your print, so I recommend drying your filament for around 6 hours before starting. Don’t try this in PLA or PETG, it just won’t have the right fit or flexibility.
 

Overall, it’s a small but handy accessory that keeps your Stanley clean, functional, and looking a little sharper. I’d really love to see how this turns out if you print it, so please share photos of your Stanleys! 🥤