https://than.gs/m/1420803
A collection of cup holders that slide between your couch cushions. Free to download https://makerworld.com/en/models/1318086-cup-holders-for-sofa-cushions#profileId-1353638
Yes any standard sized utility knife blades should fit. I tested a bunch of different brands from my local hardware store.
STL files available on Thangs
Also good for composting and making room in your recycling bin
Yes any standard sized utility knife blades should fit. I tested a bunch of different brands from my local hardware store.