I’m with naita. I’d head straight for the nearest optics lab.
Everyone in these superpowers discussions always says that they wouldn’t want to risk the possibility of becoming a lab subject. Whyever not? It’s the most useful possible thing I can think of to do.
Works for me, love the idea.
As long as you can go home at the end of the day and not be locked up in a cage when they aren’t experimenting on you.
madmonk28 took my idea, so I’m heading to the Senate to do the same
Roam the halls of government. Or hang out in the ladies locker-room. One of the two.
Mitch McConnell’s office. I am going to be on his leg for as long as I can get away with it. I want to know what his plans are and, above all, what the heck is his real motivation? Because I’m jimmied if I can figure it out.
Can’t walk around in fog or other high humidity - condensation on skin would show. Can’t walk in sand or mud - footprints. Without invisible footwear, my soft feet won’t do well in most outside places. Driving or cycling while invisible would be noticed. Political shenanigans sound fun and useful but, even invisible, would I trip laser and IR alarms in security zones? Volunteer for a lab and they might never let me leave. And I’ve no pets to frighten. What a pickle!
Say my organic bodyparts vanish. Do my cyborg replacement bits remain visible? False teeth floating in air…
Visit my pastor. Move a few things around on his desk. Nothing too extreme. A harmless prank for a man who believes in miracles.
Similar to Marty McFly posing as an alien spaceman in George’s bedroom. 
That’s good, but I would be focusing on shadowing the Orange One, so I could spill even more dirt on him.
Area 51. I don’t expect to actually find anything but my curiosity is killing me.
Definitely hang out at the White House all day. Whisper “Guilty…Guilty…GUILTY” in Donald’s ear. Spell “QUID PRO QUO” with his french fries. Tie his shoelaces together as he’s having a sitdown meeting. Add “I am the Antichrist” to one of his tweets. When he goes to bed stomp around his bedroom and with a spooky voice say “I am Abraham LINCCCCCCCCC…oln…You have defaced my HOUUUUUUSSSSSSSE…I won’t leave you until…until…until you run naked to the North lawn and jump into the fountain.” Then as he stands behind a podium get behind him and give him a giant wedgie. I wish it could be a whole week.
If I was also impervious to cold and wet, I would venture into the woods where Dena swears she saw an UFO, but yeah it would be cool to see the fox, and owl and deer mosey along in the middle of the night.
I just thought of a better one: Go on one of those ghost hunter type shows and really fuck their world up!
I would get into the IRS with my phone (also invisible) and photograph the last 8 years of the orange menace’s tax returns, which I would send to the NYTimes.