Waterloo 200 Game
Problem - no figures and no time.
Answer - Paper.
So I found some top-down images of every unit at Waterloo on the Junior general site:
Just look for those labelled as "Battle of Waterloo".
I printed them all out (25 or so sheets of A4 and a full ink cartridge). Laminated and cut out.
Here is an idea of what they look like on the table: