Good Bargain Hunting.
It's fun to shop when you know you won't pay more than $1 for something. Sure, you get what you pay for in some cases, but there are a lot of bargains here too. Greeting cards are 2-for-a-buck and they always have great gift bags and books. I also have good luck with seasonal decoration and stocking stuffers.
Hey, it's only a buck!
10/30/07 Update: Try Dollar Tree next time you're throwing a party. I was amazed at the good selection of party goods and party decorations. No one will know you only spent $1 on all of your fabulous decorations!