found a couple different boxes that was for the cr2032 batteries but the most they held was 40 and i just picked up a 100 pack so i dont want to have to print 3 of the 40 cases so i took a popular Parametric Rugged Box - https://www.thingiverse.com/thing:4757317 an took it into fusion360 an made the changes need for it to hold 50 of the batterys, exported it from fusion an then imported that into tinkercad an used tinkercad to make the actual battery slots in the case. i love fusion for more complicated parts but tinkercad has mad simple stuff 10 times faster to do so i bounce back an forward. if this isn't enough for you an u would like to make one that holds more let me know an i'll update this one to have more options but if you looking for less theres others on thingiverse that uses the same box with less batterys slots and are smaller boxes. hope someone else gets some use out of it.