Here is what I'm thinking about doing for my 30 minute magic routine:
Start off with Mouth Coils to get their attention
Cups and Balls
Peanut Butter and Jelly Illusion
Needle Through Balloon
Swallowing a Balloon
And then I will do about 15 minutes of balloon animals for the kids. Any feedback would be great.
P.S. I am planning on getting a break-away wand. Do you have any opinions on that gag?
Ben is right NO for swallowing balloons, if you do it then the kids will try to.
Other than that, you have a 30 minute show but you have enough effects for a good hour show. In my street show I do the cups and balls, that alone takes between 20 to 35 minutes. I don't do it in kids shows at all.
I don't like the mouth coils at all but some people use them in kids shows so that's just me. The needle thru balloon is good and should take you at least 5 minutes. Sponge balls can be drawn out for a good long while. The same for D'lites and the peanut butter and jelly can last between 7 and 10 minutes.
Remember it is not the tricks in the show, it is the showmanship in the tricks. Make them interesting and entertaining. I'm nowhere as good as Tabary but I can do a good 20 minute rope routine and not lose a kid to inattention.