How off were your walls to begin with? That's the part nobody talks about with these laser levels. In older kitchens the studs can be bowed or the floor can slope and the laser just shows you how bad it is, which can be a whole new headache. Did you end up shimming anything or was the frame straight enough that the green beam did all the work? Curious because the $60 ones are hit or miss on whether the self leveling actually holds over a long run.

Did you ever try just leaving the game set up on a table between sessions? We did that for a while with a big campaign game and it worked great until my cat decided the miniatures were toys and batted half of them under the couch. Took me a week to find all the tiny pieces, and one sword guy is still missing. The baggie thing is smarter, I'll give you that. Now I sort everything the night before too, but I also write a tiny sticky note on top with who is playing what color so we skip the whole "who was blue last time" fight.