Have you ever watched "The Office" and thought "I wish I could be the Jim of my work, but I know I would get fired for doing any of those things?" Me too. Fortunately, I have not given up on pranking and messing with my co-workers. I live for it. I'm constantly going through my day thinking of how I can mess with people. While your situation of work may differ from mine, here are the four "pranks" I constantly pull that you can draw inspiration from.
1. Putting Tape Over the Scanners
I love this one because you may not know who is going to use the scanner next. What's even better, they're usually helping a customer so they can't say anything to you until after they're done. You just get to sit back and laugh.
2. Putting Sticky Notes All Over Someone's Desk
This one is very harmless, but still so annoying. The more sticky notes equals a more annoyed person. This one is my favorite one to do with my bosses' desk. Writing funny messages on them is a bonus.
3. Sticking Things on People's Backs
Although in the picture I used a sticky note, this also works with tape, stickers, name tags, really anything sticky. This takes incredible skill to be able to do this without them finding out. Practicing sticking a note on their back without them noticing is a good way to pass time. Just make sure you tell them at the end of the day so they don't wash their shirt with it on it.
4. Putting Name Tags in the Freezer
I do this one a lot; probably once a day. Usually, with the same person's name tag. We may or may not have an ongoing war. The name tag doesn't have to be hidden in just the freezer. Lockers, high shelves and bowls are other good places. Another tip: you get the most impact out of it if you hide it in the middle of their shift instead of before or after.
Have fun doing these pranks and any others that you come up with, but remember not to be destructive of people's property.