I like to make people's day by doing some good physical comedy in public, with random, unknown to me witnesses. Then I just leave, make my exit on a high note. No one knows me, yet everyone knows me!! I love it.
For instance I have this one gag I do sometimes where I walk up to one of those blue US postal service mail boxes with the pull-down door, I stick my letter in and then act like a monster is inside there and has grabbed my arm, and is trying to pull me into the mailbox. I struggle with the monster for a bit then break free and run off with a look of terror. Hey, if they don't laugh, they get freaked out, so either way it's cool with me. That's just one, I have a lot more things I do, but you get the picture.
IIN?
For instance I have this one gag I do sometimes where I walk up to one of those blue US postal service mail boxes with the pull-down door, I stick my letter in and then act like a monster is inside there and has grabbed my arm, and is trying to pull me into the mailbox. I struggle with the monster for a bit then break free and run off with a look of terror. Hey, if they don't laugh, they get freaked out, so either way it's cool with me. That's just one, I have a lot more things I do, but you get the picture.
IIN?

If its working for ya, don't stop. I think more people should be more like that. Things just get too damn serious after a while. We need to smile and laugh a little.
I put blue kool aid in a plain plastic spray bottle and walk down the sidewalk spraying it into my mouth. People think it's windex. Sometimes for effect I will bring along a rag or paper towel and make like I'm cleaning something and then give myself a little spritz. That also works on neighbors or parents or anyone really. If you never tell anyone what you're up to they'll never guess.
There's this craft store and I go in there on this aisle with these cherub looking porcelain figures that are about the size of a newborn baby. They just so happen to be in a seated position with legs crossed. Ever so conveniently on the next aisle is this fake Spanish moss. I grab a chunk of the Spanish moss and put it in the lap of the cherub and it totally looks like a mass of pubes.
I'm the person who makes fake grocery lists and leaves them at the store, there's a poll about it on here, that was me.
Eh it's hard to think of all the stuff I do, I get a major brain fart sometimes. Let me relax and think on it and I'll report back some more. That should be enough to occupy you for a while, though, right?
A lot of the stuff is also spur of the moment things that just happen to be do-able, so I forget a lot of stuff. I make jokes all the time to the store clerks, I usually manage to get them going. I just think, I couldn't do that job, standing there all day dealing with rude fucks, so I try my best to make their day better and easier however I can.