Scoobies’ Shopping adventures

The challenge to write a ficlet(s) (the more, the better) of scoobies either shopping for or acquiring various items of other fandoms, and have them used in a novel ‘scooby’ way.
Sample entry of mine can be seen here:

http://www.tthfanfic.org/Story-15854/alizarin+The+Ultimate+Slayer+Traveling+Accessory.htm

Either use:
- a unique fandom’s “marketplace”, (e.g. The Market in Neil Gaiman’s Stardust, Knockturn/Diagon Alley for HP, Kittlemeier’s place for Batman, etc… you get the idea)
- a unique object/artifact f...