I see "Prestidigitation" and my mind immediately wanders to Dungeons & Dragons...

I use prestidigitation! Now...

...This book tastes like a banana!

...The king has an "L" on his forehead for an hour!

...I have an action figure of myself until the end of my turn!

...Your face smells like lavender!

...Wait, I can "soil" things? I "soil" your face!

It may have been a roundabout way of saying it, but point is, prestidigitation can be so much more than wonder. It can also be ridiculously fun using it to mess with people! For instance, Pinkie could really mess with Twilight using that hat.