Whatever you want to call them, and however they apply to your life, spanking straps are loved (and hated) by many. While there are many fantastic straps and tawse's available, most are large, heavy and rather expensive. I prefer "lighter" implements that have both the "sting and thud" effect, but that won't break your backside...or your wallet.
I prefer 2 or 3 fingered tawse (or taws to some people) made of natural leather, that are 15 to 20 inches 17 inches long and 2 to 3 nches wide, and the thickness of a good sturdy belt. It will certainly leave a lasting "impact" on the recipient. :)