Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Do the cup holders come out, or are they a molded-in part of the lid? What caused them to crack?
Most of those things are molded thermo-plastic. You can make a strip of filler rod by slicing it off someplace where it won't be missed. Then work it in with a soldering iron. Get both sides of the crack warm enough to kind of stir them together, and then add the filler. Smooth it over with the side of the iron. If you're good, you can make a pretty decent water-tight repair.
Or cut them out and replace them with plastic cups from the dollar store.