Neatoshop.com  has a terrific collection of Halloween costumes for adults and kids including some really cool costume eyeglasses like this-

Oh so Spidey!

Optical Illusion Eyeglasses

And they have lots more! And, no, I cannot make lenses for any of these! Sorry.

(Rhonda and I love Neatorama and their store, Neatoshop and we think that it would be really neato if they had a affiliate program. Alas. Not yet.)
-Steve