Equipment requirements are fairly straightforward. DSLL supplies bases, tees, balls, shirts, and hats.
Glove: You should look for a youth-sized leather mitt (make sure you know which arm your child uses to throw). Don't spend too much at the younger ages - soft leather will aid their ability to catch. Please see this link for a guide to help select a proper glove size by age. Do not worry too much about position - at the younger ages all players are infielders and outfielders.
Spikes/Cleats: All-around cleats work here (even soccer cleats). Make sure they're not metal.
Baseball Pants: Grey baseball pants work best.
Helmet: DSLL does NOT provide helmets but they are required.
Bats: Please see the tab under Little League Rules regarding the Little League Moratorium on composite bats before you buy a bat. Please refer to this link regarding bat sizes.
Questions regarding baseball equipment can be referred to