Hmmm, I have used many in my day.

I have waited for people that I knew would be hunting and walking after me and would hit a grunt call or snort wheeze as they walk in and scared the heck out of them.

Taken bow ropes off of trees knowing they would be relying on it being there, or tied the bow rope on a limb part way up the tree.

Used the ghetto puppet can one time to make another hunter think there was a hot doe in the area. I was in a tree about 60 yards from where another hunter has permission. I could barely see him and he had his back to me so I hit the can call a few times and then waited thirty seconds and hit a grunt call. I watched him pick his bow and go into stealth mode ready to fire. I did this every ten minutes or so for close to an hour until he got out of his tree and started looking where the other guy was

Put Fox Urine on my dads boot bottoms as well as ex father in law. One didn't have any issues but the other had a fox dancing under his tree marking the area and driving him nuts.

My favorite by far when sharing property is to make fake scrapes and rubs on spots that I know the bucks aren't traveling often, leave my scent and brag about the huge buck I saw just outta bow range from the stand near the faux sign. It might be dirty and DT like but you should always scout your property, not show up opening week asking where they are at.