Empty your office hole punch if you still have one. Pour the dots in a defroster vent and leave the fan switch on. It's the give that keeps giving

5B3CA1F3-49C6-4E5C-ACC4-48D3DEFCEEA0 (resized).jpeg

Have bottles of hand sanitizer? Pull the plunger out, empty the tube, stick tube in a mayo packet and fill it up. Put back in bottle and wait.

This ones a little harder to do, but we managed to pull it off. Our parking lot at work is basically the woods with cleared spaces to park. One of our guides is the king of pranks, so we set our sights on him.
While he was out on the riverr we lifted the back end if his tiny sports car and put a lock of wood under the rear differential. The block of wood made it so his rear tires were an Inch off the ground. Being in the woods it was easy to hide that with leaves and debris. When he got back and went to leave we all hunkered down behind a gazebo as we tried to contain our excitement and laughter as he put it in gear and tried to leave but went nowhere. I guess you had to be there as we were literally rolling on the ground outta sight as he jumped out hands in the air thinking something was majorly wrong with his car. When he caught sight if us on the ground it was priceless!!

Tape down the switch on the phone handset receiver, call the person a couple times, and enjoy the hijinks.

Keep a "loaded" turkey baster at the ready, then follow male co-workers into the lavatory and let the terrible aim ensue.

Compile the following:
Transducer (a device that beeps when power is applied)
Mercury switch
9V battery
A couple of very strong magnets

Wire up and mount the components to a board and stick it under the frame of someone's car. When they accelerate or brake hard it will beep, but not when sitting still or driving normally. Guaranteed to drive them crazy!

For the office, a few years ago I bought a ThinkGeek Eviltron and stuck it up underneath the bathroom sink. I set it to the “hey can you hear me” setting. It took 3 months before someone found it. Everyday there were stories about people supposedly hearing things in the bathroom. It was epic.

00BA4092-FB70-41A8-A4F7-0F03E5AFB033 (resized).png

For home use, I told my fiancé for my birthday I could really use some wireless extension cords. She went on the hunt and was relentless in trying to purchase them. Every time she added them to the cart she was getting errors. Finally she read the description and she laughed about it once she figured it out. She felt dumb.

https://www.thinkgeek.com/stuff/41/wec.shtml

Doesn't help with office pranks but its funny. I indoctrinated my daughter to April fools antics when she was 4 by secretly dying her hair bright red (she's a toe head blonde) in the tub on bath night. Funniest wide eyed double take I ever saw.

I tortured people for months with the annoy-o-tron. Drove them batshit crazy. You don't even have to do that good of a job hiding it. Most fun I had. I just told them I didn't hear it. hahaha.

Oh man, someone put something like this under a desk at work. Eventually the facilities team put that desk in storage and it ended up getting redeployed for someone on the team I'm on, it took us months to figure out what the hell was making noises randomly. We thought it was coming from the wall and they were preparing to cut it open to see wtf was doing it.

I once put a shut down script in the Startup Items folder of a coworker's Mac.

Years ago I worked for a large credit card bank and had access to their blank statement letter head and billing envelopes.

I sent some old Navy buddies 10k+ 'bills' for hotels, strip clubs, casinos, dining, misc XXX mail order goods. Never fessed up to the deed but I still smile when I think of the conversations they must have had with mystified customer service that couldn't find any traces of the accounts

Put up a sign above the hand dryer in the bathroom or the copy machine that the device is now voice activated... Bonus points for simple instructions.

We water our tees and greens about 3 a.m., and with our irrigation system, it's all done with hoses. We don't have an automated system. Once our irrigation specialist (a college student) has his sets going, he's got about 30 minutes to kill and usually hangs out in the maintenance building. So while he was in there, I moved his cart to where he couldn't find it, then hid in the trees. When he came out and couldn't find his cart, then I started making some noise. It backfired when he got scared, called my mobile and he hear's my 'The Good, The Bad and The Ugly' ringtone going off. I was lucky he didn't quit. But I got him pretty good.

A few years ago we had three new neighbors move into our cul-de-sac in period of a few weeks. I changed my wireless wifi router name to FBI_Surveillance_Van_2. It started a lot of conversations.

Ha...I like that

Cheapest can of cat food you can find. Open it and place in HVAC vent.