I would go to my friend's house, and find his one cat that hates people. Then I'd throw stuff at it. All day. It would get ticked and my friend would not know what the poop was happening. Then his dog would come and attack the cat. Then I'd throw more stuff at the cat (not heavy stuff, just soft stuff to agitate it).
Next, I would go to the pool up my street and start splashing random people.
Then, I'd run around my neighborhood giggling like a psychotic maniac and see what happens from there.
But most of all, I would inevitably try to do something helpful (though it would be eerie), like giving a kid his/her ball that has gone into the street (O.o) or holding my baby brother for my mom. She'd probably hit me though (not knowing it was me).
I'd pick someone and stalk them all day occasionally leaving a dollar on the ground for them or something like that so that they can feel like it's a lucky day for them and then they would be happy and nobody would know I was doing it.
I'd dip my left hand in paint, then grab a large Nerf gun and go around chasing people. After that, i'd wash the paint off and go swimming - all the water would spread around me so there'd be a body shape in the water w/ nothing there. Next i'd go bowling. Then finally i'd glue Cheerios to myself and run around as Cheerio man.
I'd go into all my neighbor's house just to see what it's like inside. Most of them never talk to me or invite me over or visit me, so... that would definitely be the fix.