Cheap: Beadsprite Magnets For Sale on Etsy
These are video game sprites made out of those little beads that you iron and melt together. I posted the Mario ones, but the seller has others, including some Earthbound and Final Fantasy. They all run between $4 - $5.50, so they're affordable. Of course, you can make your own if you're crafty and your mommy lets you use the iron. Mine doesn't (read: I scorched my genitals thrice), so I'd have to buy them. I am allowed to play with the beads though. Delicious.
Thanks to Jen, whose husband is clearly a very lucky man, for the tip