My in-laws last year did a Gift Exchange but several people didn't bring gifts so they ran to the local Walgreens to get some gifts. Almost every single gift was a "As Seen on TV" gift and it was a blast!
The ministry i work with is having a Christmas party with this idea and it was a blast!
Here is a link to the following stores that you can find the items year round!
BED BATH & BEYOND
WALGREENS
WAL-MART
TARGET
