Lisa from Easy Frugal Living contacted me and her Dollar Tree had solar lights for $1 each. I looked at a couple of locations when I began this project but they didn’t have any. Hopefully I was just there to early. I have had a lot of ladies talking about this project so I wanted to let you know. If you make a light let me know and I appreciate a link back.
~~~update:
In the comments you will see Wal-Mart is another option for inexpensive solar lights.

Cheri