Scholastic currently has a free unit study on the Underground Railroad.
Scholastic is also having their dollar days sale for teachers right now. Homeschoolers are included in this sale. You just need to sign up for an account and have that account verified. I placed the order and then called to have my account verified. I received my books yesterday. What a great deal!!
Rose Charts if offering free printable versions of some of their wonderful Bible charts. You will be asked to sign up for their email list. They will then send you a link for 9 free charts. Each week you will receive a link to a new free echart. This week, the featured echart is about Noah and Abraham.
For more frugal ideas, head on over to BiblicalWomanhood.