Maybe you are thinking about this? It is for professionally made CNC cut foam, but you could use it to virtually plan your pic and pluck attack. They have the Apache line of cases.Wasn't there a site where you could "plan out" your pick and pluck foam. Like something where you could set up your foam size and the dimensions of the items and map it out in some kind of interface before you actually started cutting foam... Or did I hallucinate that...
https://mycasebuilder.com/