A.A.
Buy the cheapest potty ring you find to go on top of your potty. Get a stool so they can step up. Personally I think the little potty chairs are a waste. Who wants to carry around a potty chair every where you go, plus you have to clean them out every time they go...yuck. They can learn just as fast using the regular potty with a seat so they don't fall in. I like the cushy one I bought at walmart for like five bucks, it has little yellow duckies on it. When you are out and use public potties, they sell disposable covers or fold up plastic seat toppers you can carry in your purse until they are big enough to balance themselves. You will be saving yourself the hassle of dragging a potty all over town.