Here is the next one for you. I recommend using a list for this. Oh, almost forgot to tell you that it's freaking easy. Have fun!
Even if tiny I call you tall
The first two lines contain no hint at all
For sure I'm egocentric
You mean nothing to me
So the best choice seems a third person to be
Make him steal what surrounds
Find one more glue
and my full name can be seen
If you want to check your answer this might help. The cat in the manger may misuse this as a hint.
Read on with prudence
and drop the penny
Some say I'm one, I say I'm many