@rastinza you can make a "controlled environment" using an old aquarium for example.
https://mycotopia.net/topic/8277-aquarium-growing-and-its-possibilities
You could use an heated pad for warming the area of the mushrooms.
What specie are you going to grow?
@marghera I got some oyster mushrooms.
I guess I could just buy a plastic box and use that to control the environment, but I'm quite unsure how an heated pad might help since it would still need ventilation and the room containing it is not heated.
Outside temperature during the day is around 10°C and I guess room temperature might be slightly above that.
Do you believe it may grow at these temperatures? I'm not really aiming for the best yield, as long as I get something out of it it's fine.
@rastinza you could place a metal plate and a small candle under it you need to play with distance and thickness/material of plate to get the right temperature.
A tiny candle will do a lot, happy experimenting and let us know what worked.