The first thing HOME needs is a tesseract! Everyone loves Tesseracts!
After this, you begin furnishing HOME. There isn’t that much room so you can’t get everything you want in there. You manage to get a work bench, a couch that transforms into a bed (score) a little radio, a book shelf that is full of interesting literature and games like scrabbleship as well as a big tub (In case you have to accommodate specific types of guests).
You want to put a dinner table that can seat 6 but you decided to go with the tub instead because you don’t eat! Silly.
Oh hey, look! It’s your first guest! someone has opened up a terminal over HOME! It looks like they are running diagnostics and installing some new software!
You should greet your new guest, as well as make any final changes to HOME.