A few years back I got some aluminum clippy pieces that hook onto the edge of a sheet pan to hold a second pan above them. Because who makes just one pan of cookies?
But they were too tall for the plastic storage box on the top of the fridge that we use for letting rolls rise – the upper sheet pan was right up against the top of the box. I had plans to cut them down and bolt back together, to 3D print a version blah blah, but I never got to it.
So instead I did a trace and took a picture (how nice would it be to be able to trace in the GFUI and then download) and then messed with the length and width in Inkscape (while keeping the angles of the pan-touching bits the same). And a spacer because one of these in 1/8"BB would fall right over. I think it came out pretty well.
I think I’ve also figured out a quick-and-dirty method for making finger joints: make some boxes the right size for the cutouts and align them where they need to go. Then make a couple copies and align them outside a proper-sized rectangle with the edges overlapping exactly. Last step is a union to make it all one path. Not good if you need super precision, but many things don’t.