Hello, Cupcake! from Santa and this cookie and cupcake decorating set from my parents.
I haven't used a frosting tip and a bag since I was a teenager and I decorated a tiny cake at a church activity, so I'm not an expert here, but I liked the bottles rather than bags. Especially for kids. The tip kept popping off the one accordion like bottle, but only when Princess Sparkley was using it and I think it's because she'd forget to squeeze the accordion in... she'd just squeeze like it was the normal bottle, or a tube of toothpaste. So, that aside, I think we did pretty well for lesson 1.
The other night we started frosting bear shaped sugar cookies just to get the hang of the frosting tubes and tips. I won't tell you which are mine and which are hers since it's a bit embarrassing that are skill level is about even.