Once I got her bike finished, I went out and got a pair of training wheels for her old bike, which by the way is essentially the same bike only without gears and a coaster brake. I got that one for free at my LBS last year. All I had to do for that one is replace the brake cables and grips. I added the bars because she liked them. It's unbelievable how quickly Elliot has moved from a bike with 12 inch wheels to one with 20 inch wheels.
Above are my three kids, from left to right: Katie, Elliot, and Brodie. Last Friday as I was driving to work I stopped at a tag sale and bought a 6 speed Diamondback for my daughter. I spent $8 for the bike and all I had to do was replace the front wheel which cost me another $26, so I spent a total of $34. I also had to replace the stem but I had that in the parts bin.
Here is a little video I made of the boys taking turns riding the trail-a-bike.
Looks like I am going to have to get a Tandem Trail-a-bike for next summer.
And while I am at it, I might as well get a tandem so that I can take all three kids on much longer rides.