Here are my uses for rubber bands:

Weapon

To shoot at someone 

to strangle someone

to block blood from entering your blood vessels

to use as a bungee cord

to use as a lasso 

to use the rubber to make an eraser

to use the rubber to make tires 

to burn the rubber to make a really lame stink bomb 

to use the stink and smoke to bass people

to secure something

to workout

make and elastic “something”

Make rubber chickens 

Make rubber ducks 

Make synthetic rubber

chicken substitute

pork substitute

beef substitute 

clothing

as a sling shot 

assemble stuff to make other stuff

mutton substitue 

wires

Insulation

Math

Communication