I also found some good resources at the links below:
This site gives background information about the transformation of ovens.
This site has some resources for teaching about homes from long ago and today with symbols. I think it has a few free printables.
This site is awesome! It is by Proctor and Gamble. If you click on animation, you can show your students an animated timeline of washing and how it has changed.
I hope you find this helpful!
Oh an by the way... I am going to work on a pacing guide and getting some pictures of our final assessment for long ago and today within the next two weeks. I will post it when it is ready. :-)