Thanks to everyone for their wonderful suggestions! I printed them out and showed them to hubby last night. We were both disheartened to know there are people out there who will steal from garage sales! Seriously, who does that? We will try to keep the higher ticket items (mostly hubby's tools and electronics) in the garage so people can't grab and run. Of course, it may be funny to see someone grab a tiller and try to run down the street with it!
I realize having a garage sale is a lot of work, but I'm hoping it will pay off for us.