Buy Handmade...It's the coolest...and you don't support the MAN.
Try Etsy for awesome stuff...Here are some ideas:
Buffy Monster Knitting Stitch Markers... and Scooby Markers
Festive DIY Buffy and Spike Top
Buffy Custom Figure by Jess!
Buffy Plush Stake Made by Me!
Spike Lino Print on Loose Leaf
And this gal has hand dyed sock yarn named after Buffy episodes! Gotta love that...and I do love to buy sock yarn!