If you try these, you will never look at clothespins the same way again. One of my fave toys.....:Screwy C’pins: Take wooden clothespins, and with a very thin bit, drill a pilot-hole thru both jaws together, right in the center of the fat part of the jaws where they make contact. Then *take small screws, or better yet, small eye-screws, that have a ring on one end-such as are used in fine cabinetry, sand the points off to slightly round them, and prevent immediate breaking of the skin, and screw them thru the pilot holes so the points meet in the middle, and stand sightly proud of (say, 1/16") the wood. This focuses the pressure down to just those 2 tiny points... and the screw are Infinitely adjustable to achieve the Precise degree of pain desired. The eye-screws also allow weights to be hung easily.
Another fun toy, easy to make, is tacky-pads..... Take 2 thick acrylic scrub-pads (dollar store)- get the ones as thick as the standard thumb-tack is long, and put one tack right in the very center. Then make a pattern of your preference... a star, concentric circles, diamonds- centered around that first tack. Wear those pads inside your bra for a day.*The tips will not break the skin, but they should dimple it nicely- and pre-sensitize your tits for play later in the evening, if you wear them thru the day.
Hope you get as much enjoyment from them as I have had.