What do i do if my guinea pig is eating everything?!?

ok so my guinea pig (flo) is about a year old now and when i first got her she only ate food but so much that i thought she was really really fat but i just found out i bought a pregnant guinea pig and had 3 beautiful boy piggies(: but now that she isnt pregnant she eats everything! she eats tape, turtle shells, bottles, nibbles my finger, trys to eat my ears and or nose, her own poop, paper!!! plastic, wires, and lately she ABSOLUTELY LOVES to eat REMOTE ONS and HAIR!! what do i do? is this really bad for her? how do i make her stop?!?!