My guild did a all day sewing class for girl scouts. We did the burrito pillowcases. We only do ages 10 or above now. The younger ones just wanted to 'mash the pedal' and turn machine knobs.
We now have kits cut in brown bags and the girls were not allowed to pick which kit. We learned if we let them pick they wanted to see all of them and ALWAYS wanted the same one as another girl got first. And the Moms were worse, they wanted their child to pick a color that matched their room or said they didn't understand why so and so got the pretty cat fabric and her daughter loved cats and couldn't find another one. If the moms are suppose to be there to help, forget about that, 99% of them caused more work and frustration.
The pillowcase is all one seam and very forgiving if the seams aren't straight. Our guild now has rigid rules for scout days, not for the girls but for the moms!