Have them draw pictures of the clothes and homes. Let them write about an imaginary day in the lives of their ancestors. A wonderful bimonthly column on genealogy. You can post your questions here and she has a great list of links. Lots of resources, including lessons on genealogy.
Some services are for sale, but many are free.
A government site with genealogy records and information. There are some history lessons here as an added bonus. Make a scrapbook to go along with your family history. Brandie writes a bimonthly column. Includes guides to using LDS family history centers, tutorials to various genealogy subjects and a free newsletter.