Thanks to the WTM Forums, I heard about this nifty deal: if you sign up with C-SPAN classroom, they will send you a free (yup, that would be FREE) wall timeline of all the American presidents.
Quote from their website:
Quite a find for a family beginning to study the 1800s, no?
C-SPAN is delighted to announce our new American Presidents Timeline poster for classrooms. The 6ft long poster details the lives and public service careers of every president, plus key historical events, Supreme Court cases, and technology milestones throughout 280 years of Presidential history. They are free of charge to C-SPAN Classroom members.
It is, however, 6-feet long. Let the search for wall space begin!
Free President Timeline