About to split rehearsal space with friend. Any rules we should follow?

Its my spot, i have drums and a mixer there, friend is bringing pc for recording and streaming. He will be playing on my drums but he has to use his own sticks and cymbals.

Rules so far

1. Do not use my sticks or cymbals or bass guitar
2. Do not move around or adjust cymbal/drum placement
3. Do not change settings on my mixer

Hes a good friend of mine but deep down im concerned he might use my cymbals. The other rules i would only be midly annoyed by if he changed them