Tried some other gadgets to simplify pulling the dadgum lid off plastic tubs things like dip are sold in. None of them worked to my satisfaction, so I designed this little finger ring sized gadget with some teeth to get under the lid so you can pull it up with a finger, then get another finger under the opening made. It still has problems when you get the teeth wedged into the ring attached to the tub itself rather than just the lid, but it does eventually work and maybe makes getting them open simpler.

DIY corexy homebuild printer

No

No

.3mm

solid

In PETG this seems tough enough to pull on lids without breaking, not sure if it would survive in weaker material.