Quite disappointing. When I opened it up and put batteries in them I noticed right away that 2 of them were sticky. Obviously they had been used and returned and then reshipped to me. But I can forgive that if it works. 2 of them did not. I tried changing out batteries to no avail. So I went with 2 instead of 4 since 2 grandsons were coming over. I went with frozen jello. An idea that was offered in previous comments. Seemed like a good idea. Well this is what they dont tell you. After removing the jello from the molds (needed hot water to do it) all of the adults burst into laughter. Since they had warmed a bit with the removal the top third or so was bending ever so slightly at a very peculiar angle. They looked exactly like....(can I say "dildo" on this forum????) yes, there were my 2 young grandsons innocently licking and "fighting" with the dildo lightsabers. It has to be the funniest thing we have witnessed. Maybe I would have kept them if all 4 worked........and used them at a bridal shower.