There are Olympic coaches having their athletes do hip thrusts, so you can do hip thrusts with your bed and chair. When you can do a lot of them, start on single leg hip thrusts.
Single leg squats are a good idea, and you can use a chair to help you stabilize or take weight off until you can work up. Deep jump squats with dumbbells on shoulders can help power a bit.
Also, good mornings and RDLs with dumbbells to build core and hamstrings.
An isometric overhead press at different levels may help. Use a doorway and change the level of height with crap in the room if you can. First, height hands around your nose, then second height shoulders and elbows level, third height elbows lined up with your eyes, as if you're about to finish locking out a press.
One-handed power snatches and kettle bell swings or pull-through with dumbbells might also be of use.