>>BTW - it they do like trains, check out the Illinois Railway Museum. Little known gem to the northwest of Chicago. Great collection of working rolling stock, including operating steam trains on weekends. At some point during the summer, they usually also have a "Thomas" weekend.
"Thomas" is at the Illinois Railway Museum this weekend and next. Tickets sell out, so be sure you have them before you set out.
http://www.irm.org/thomas/index.html
My son saw Thomas at 4 years old in Baltimore and was entranced. Always a sedate boy, when we rounded a corner and saw Thomas across the yard, my son took off like a shot and it was all I could do to keep up with him.