Then at least there must be enough space in your house, or there is no place to put him.
It's best to find a room of more than 20 square meters, otherwise you can't open your fist when you kick.
Then the sandbags are fixed on the roof with chains and expansion bolts, and on the roof in the middle of the house.
Or there are fixed beams on the roof, which can be hung up.
Take a speedball and hang it. Do not occupy space. Much more fun than sandbags. Speed burst.