I've always wanted to have a nice, wooden hundred board for Robbie, but I never could justify the cost. I spent last evening making a few hands-on hundred board activities for under $10. Using three pre-laminated hundred charts (the printable ones just seemed too small for my tastes... these are approx. 1"x1") and a set of All About Spelling magnets, I made a traditional hundred board as well as a puzzle version. We're keeping it all on a large old cookie sheet.
I cut the border from one hundred chart to make it fit the cookie sheet. I placed a magnets on the blank side of another and then I cut those out.
It was super easy!
We have a few of these wooden containers (we've had them for years) and I simply cut some craft sticks and glued them together and into the container to make a divider. It worked perfectly!