Chances are pretty good that you have been told all sorts of moving advice for appliances, electronics, and breakables. When you finally attempt to tackle your child's toy collection you will realize that you have met your biggest challenge. Why hasn't anyone told you how monumental this project is? Seriously, cleaning out the garage is less painful! Still, it has to be done. These tips will help. Donate and Trash Boxes Okay, before you start going through their toys, and deciding what to get rid of and what to keep…