Dabbling is an Artist's Best Friend

I've found that the best way to grow as an "artist" (graphic artist or not) is to dabble.
Dabble in different things, whether you're good at them or not.
This is me dabbling in drawing:It's a pony.

This is me dabbling in photo-editing:Oooh, gruesome.

But the most recent thing I've started to "dabble" in is this:
Silhouettes.
Why?
Well, it never really hurts to learn how to do other things.
This is the first one I've ever done. It actually wasn't as hard as I expected it to be.
But why do I think it's important that I learn to do silhouettes?
Because the day someone asks me to do them for the layout and I say "I can't" will be the day I'm ashamed of myself.
That should be a simple thing for a graphic artist to do. But for the longest time I had no idea how do to it.

I'm not sure of the next thing that I should learn to do.
Obviously I can't draw. It's just not in my blood.
But I can't think of what else to learn. I even learned how to do minor animations.
It's not super amazing. But it can get me by when I need it.

What do you guys think I should dabble in next?