For controlling and helping to protect kids (along with OpenDNS
) on computers, K9 free web protection
works well. I've just seen that K9 is available on iOS too although I'm not convinced by its use in that environment.
Like above post, access at certain times of the day can be controlled and only unlocked when all homework etc is done.
Back to OP. Star Wars bits, especially Lego Minifigures is really something you want to avoid! Worse present we ever bought was Lego Star Wars book. It started a very expensive journey through vintage models and hard to find mini figures.