Visit your local hardware store and pick up a faucet adaptor that fits to the thread of a hose ($4-$5)—and a garden hose ($15) if necessary. Unscrew the aerator attachment at the tip of your faucet and replace it with your shiny new spout. Attach the hose and snake it out through the nearest window or door and into your kiddie pool. Decide if you want your hot tub to be scalding, warm, or tepid, and crank your faucet accordingly (this setup works especially well for people whose utilities are included in their rent).
Keep the hot water on a constant trickle once you get in—kiddie pools may be cheap, but they offer zero insulation for keeping the warmth in. Now go ahead, get in and relax: Pour some of that Miller into a jeweled goblet and live the high life.
What you needKiddie pool
Any outdoor space. In hose-length proximity to a kitchen or bathroom faucet.