Elastic band

[Invisible]

A stretchy piece of elastic holding papers together
A stretchy piece of elastic where a picture is hanging
A stretchy piece of elastic tying pig and pony tails together

A stretchy piece of elastic secures glasses while your working
A stretchy piece of elastic keeping the folder shut
A stretchy piece of elastic round a candle stopping drops of wax.

A stretchy piece of elastic stop knives from sliding in your hand.
A stretchy piece of elastic on bottle tops to help you get a better grip.
A stretchy piece of elastic Expands the waist band on your pants, or skirt.

just goes to show you can make a poem about anything