 The filmmaker was on such a tight budget that the films ultimate  weapon, the "focusing disintegrator", was actually a Hubleys Atomic  Disintegrator toy cap gun, bought for a dime, with a flashbulb added  as a beam. (In some scenes the words "Hubleys" can clearly be seen  embossed on the side of the gun.) Atomic Disintegrators can be  bought today on eBay for upwards of $300.