I don't know if this has been discussed before but here you go. As you know, you can buy 'Bikes two in a box at Wal-Mart, et al. With this box you have reproduced 1/2 of two cardboxes (one red and one blue). The box splits nicely and you can make different gaffs with them. (I hope that my explanation was clear) Three effects come to mind, but I'll leave that to you.

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I used this method to make a deck shell!
What other ideas do you have to make with this?

You can put both halves together and make one box for your brainwave deck. Larry Becker and Steve Bedwell both have effects that you could use this to make the gaff.

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