Do users have a "thanks" list?
 

I recently lost an external drive in a crash and I'm wondering if there is any way to view the list of threads I've given "thanks" to so I can rebuild my collection.

To the best of my knowledge, this feature used to exist, but it was disabled. I would guess it had an impact on forum speed.

You can always google your username for hits on only this site:
google.com/search?q=site%3Aforum.oneclickchicks.com+ArtVandel ay
(remove the system-added space in "ArtVandel ay", obviously)

It will also include a lot of pages besides the ones with your Thanks on them, but it should help.