I second raising the drumkit, and egg cartons.

Egg cartons are..probably the most done and popular 'cheap' solution over here.
Though either you have to be very creative, or eat a lot of eggs in a shoty time to get enough of 'em

I've heard you could also buy those sound dampening pads for on your tom's and snare, though I also heard it kinda sucks playing with them.

No need to ask, but you already put a blanket or pillow in your base drum, right?

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