When I water the outdoor potted plants, I attach a 'water wand' that let's me control the flow with a trigger.
For the indoor plants, I set the watering can (not a conventional-sized one, this one can hold 5000 cc's. You read that right, this can was found in an automotive store! I thought it was the perfect size I needed for plant watering, since I hate having to frequently refill, so now it's a watering can.) ...which I set in the shower. It fills itself! Saves time too, as I just reach into the shower stall and start watering; no more waiting.
I've discovered natural air refreshing!
While most everybody loves Febreze®, with four cats in the house (one died) we were going through gallons of the stuff. My solution was to ban cats from my room and while looking for something completely different, stumbled across: Salt Lamps. After looking up this ionizing claim, it seemed plausible; most lamps are fairly cheap and each are supposed to last a lifetime. It also adds to the Feng Shui! I suppose having a light on all the time isn't necessarily frugal, but I can always put an Energy-efficient bulb in the lamp, that's cheaper than buying a bottle of Febreze® every month.