How does she make them "special" though?
There was so many options she could pick from that it was hard to choose between all of them.
She could bring them to life and give them a personality.
Should she make them so bouncy that they are completely uncontrollable?
Maybe have it so she can take them off and use them for... more interesting things.
Or perhaps give herself the ability to change their size at will? that way she doesn't have to deal with never having the wrong bra size ever again!
Or even give them the power to hypnotise others? that could be really fun as long as she doesn't get to carried away with pranking others.
There is really so many options to choose from, she just didn't know which to choose!