Take a long, last look at your house. It won't be yours any longer. Enjoy being able to stretch out on the sofa, and the bed. Lie in front of the fire. Relish the fact that nothing is scratched.
Then wait to sacrifice your life to (s)he who must be obeyed!!!!!
You'll have a ball with your new owner. Check what food they are used to and stock up. You can change, but slowly, and at first you're best just keeping to what they eat now. You don't want to upset their stomach. Same with the litter (though that's because they can be stubborn buggers, rather than any actual physical issues).
Toys, as PP said, though homemade ones can be just as fun. Toilet rolls, balls of paper and lots of cardboard boxes.
A catbed may, or may not, be used. As previously mentioned, puss will have all seats and beds available anyway (unless you shut them out of the rooms).
Something which may help the transition is to take a t-shirt of yours, that you have worn and thus smells of you, to the house, so that kitty recognises your scent when (s)he comes home.
Oh, and FFS make sure your cameras are charged and ready to go. The Litter Tray demands picatures!!!!!