okay...the sperm clinic part , we didn't need to know , lol..
but , I agree if you are talking about casting... everyone here has some pretty good ideas...just may I say that , for gluing foam board , extra hot glue sticks...lord knows these things are used up pretty quick...and replacment sharp blades for what ever you are using to cut the foam board (in my case, I use a "fiskars 45mm rotary cutter)
Joe