OH, I see this is the place to go for help. Sounds like plenty of range war experience here. There is an overgrown area between the properties about 25 feet deep full of weeds, brush, trees, and briars they call their "privacy fence". Fifteen feet of that should be/ will be mine after we meet in court. I doubt the bees or the blackberries would be seen as threats to their sense of touch, but smell and sound are senses I can work with. Ill-tasting blackberry lookalikes growing over the fencing would work, too, but only for that first taste. As for sight? Imagine trying to sell the property with Porky, Rowdy, and the gang that close to their back yard.
I do like the idea of eventually getting into raising bees, though.
As for lights, shortly after they moved in they put up a huge, bright yard light. It was high up a telephone pole so it lit their yard, but didn't bother them otherwise. Unfortunately, it shined right into my eyes the moment I stepped out the front door. I swear I couldn't see a thing! My land is higher than theirs and the pole light was at my eye level.
I managed to survive two years without major retina damage until we got the work-shop built in a spot to block the light. I would LOVE to do a payback for the light, but while I can justify putting animals in that spot, I doubt I could justify shining a beam into their bedroom window. Hum-m-m-m, unless it was a double spotlight. Then one side could be focused on my animals and the other would just end up going the other way.