I wanted a set of thickness cards to be able to get a real world feel when designing new models. I also desperately wanted them to fit into a gridfinity bin so I designed a set up just to do that. The full set here goes up to 4mm - but I left the 4mm card out so the set would fit into a 1x1 gridfinity bin (without the stacking notches).  If you need a bin - I posted one here for you! You could very easily use a bigger bin or design one to fit the whole set and something else if you wanted to. I hope you find it useful and enjoy!