Toss out those training wheels, and teach your kids to ride using a homemade balance bike!
A balance bike is a small pedal-less bike used for teaching toddlers how to ride, and they offer many advantages over using training wheels. If you'd like to read more about balance bikes, twowheelingtots.com
is a great site with loads of information.
There are many commercial balance bikes available, but they can cost quite a bit. I made this balance bike from a used child's bike in a few hours, and it only cost me $5.
There's slightly more to it than just removing the pedals, crank, and chain from an old bike and just plunking your kid onto it . . . but not much.
Take a look at how I tackled this project, and let me know what you think. Hopefully there's enough information here to help you make your own. Thanks for looking!