Children need water guns.  Especially little girls.  Mace is fine in a pinch, but a water gun will always have a use, what with the proliferation of Bratz dolls and inappropriate clothing for young girls.

The  Water Warriors Tarantula, pictured right is recommended for its 33 foot range, 47 ounce payload, and 112 rounds per reload, which is important when the neighborhood kids need to be put in their place.

My kids prefer the SuperSoaker family of guns, even though they are somewhat heavy for my 2 year old daughter to hold and shoot.   Ah well, those toddler weight-lifting classes will soon solve that problem.
 

[via Gizmodo]