How to make a set of a space capsule?
This really depends on your budget.

Low Budget:
Find a room which allready looks futuristic with a lot of tech or stuff that looks like buttons and displays. Like in your image, you could make a little bole eye windows with some salad dish, put a screen behind which plays space stuff.

High budget:
Build a little wood cage, also add a little window which shows space and adds natural light.
Then go to home depo and just buy a lot of diffrent knobs and buttons.