On the number 2, we have iFetch Interactive Ball Launchers for Dogs.

The iFetch automatic ball launcher lets dogs play fetch to their heart’s content! Once your dog places the miniature tennis ball into the top of the iFetch tennis ball machine, this interactive dog toy throws it 10, 20 or 30 feet. Adjust the launch distance with a touch of a button, and let the fun begin. It Works with power cord or 6 C-cell batteries.

The iFetch Frenzy is not only a launcher; it’s a game. Your pup drops the ball into the top and scrambles to find it as it randomly rolls (6-12 feet) out of 1 of 3 chutes at the base.

It is a toy made for small dogs! Comes with 3 mini tennis balls with 1.6-inch diameter. You can use other similar sized balls too! Just try not to get them too dirty or wet. This will affect performance. 

This one also has Hidden ball storage compartment on the bottom to store balls. 

iFetch ball launcher is backed by a one-year warranty.  Just Call or email the company directly. Automatic tennis ball launcher lets small dogs play fetch to their hearts' content.