I'm going to assume that you have a "proper" place to shoot "fun things". I don't think that any indoor (commercial) shooting range would want you to shoot at the list of things below!
1: Over-ripe fruit and out-of-date eggs
2: Just about any type of aerosol spray can, even if they're almost empty.
3: Plastic bottles filled with water, and add some food color for effect.
4: Cheap sodas, un-opened, and shaken beforehand.
5: Cardboard boxes or paper bags filled to capacity with shredded paper.
6: Balloons filled with either air or water.
7: Balloons filled with helium, and tethered to the ground with string (add some cheap powder substance....talcum?...for a puff of "smoke")
8: Full-sized cardboard cut-out prints of humans
(i.e., advertising cut-outs with actors or athletes)(Cut-out figures such as this used to be free, after having been used for display purposes in stores!)
9: Various sizes of mild steel plating, for use as "gong" targets (Not for close-in shooting! Be careful!)
Just DO NOT shoot glass items, unless you're "brain dead" and don't care about YOUR safety or the safety of others! Glass shards can be very vicious, even the smallest particles!
Lastly, whatever you shoot that isn't bio-degradable should be picked up and properly discarded. Flies, ants and other crawly critters will LOVE you if you shoot up fruits and eggs, but they will do "their" part by cleaning it all up! The steel plates for "gong" targets can be re-used for many years if you only shoot .22's and handgun rounds at them. Any target made out of wood, cardboard or paper can be left there for the "elements" to take care of them....or you can burn them in a SAFE fire pit. All plastic, tin, steel or aluminum targets should be "policed up" in a trash bag and properly discarded.....or taken to your local re-cycling center!
.Buttons flying everywhere, nice clean holes in the screen, etc.As a bit of advice, be sure to remove the battery pack first, the get REAL hot and start smoking when shot 
