Make your own Wooden Learning Bike

While searching for Christmas presents to pass on as ideas for the grandparents, I came across the wooden balance bikes. No pedals, great for helping kids learn balance, and can grow with them. BUT, these bikes are pretty costly. I thinkyou might be able to get one for around a hundred, now, but why not make your own like this guy did. Here is the link to his flickr photos, and here is the link to his patterns and ideas.