What's a really dorky thing a twenty-year-old male would like?

I’m writing a screenplay, and I need a line that goes along the lines of, “I can’t believe you found that ___________! I’ve been searching for that for ages… Did you get it on ebay?”

The person saying the line (Peter) is following his friend (Stefan) to his room to see this object, but in fact it is all a ploy to talk to him alone. Peter is laid back and cool, not suspecting the grudge that Stefan has against him.

It has to be something sufficiently dorky. I was thinking of using “Goku figurine”, but I’m not sure that guys their age would use that phrasing (or anyone, mind you). Any suggestions, Flutherites? Let your inner geek come through in this one.

Thanks in advance!