Incomplete

You may feel incomplete 

unfinished

Missing that one piece 

Out of two thousand 

Perhaps there are too many

A fragment of an older set now diminished

Some chunks of randomness

Maybe something cool could be made with these

there are some very similar

It might fit if you get it to bend 

But that won't look right

It doesn't matter if you have plenty

When you need that one piece

to truly be complete