Some older FluidMaster brand toilet tank control valves use a hooked stainless steel rod and spring clip attached to a sliding float to adjust the height of the water level in the tank. If you are lucky enough to still have one of these older-style control valves in your toilet tank (I had 3), I suggest you take it apart and save some of the pieces when it comes time to replace it.
The hooked rod and the spring clip are unusual because they are both made from high-grade stainless steel and are thus very penis friendly (after you clean off the crud). I use one to keep my stepped sizing sound & dilator at a set point inside my penis. As shown in the photo below, modification only required one simply bend and hammering or filing down the two small flats so that the clip could be removed or positioned anywhere along the rod. With the hook able to be conveniently screwed to the dilator by the threaded knob and with an O-ring attached to the clip for use as a glans ring, it is an elegant and simple way to adjustably keep the dilator at any set depth without needing to hold it. It could likely be used in similar fashion with other probes.
Inside FluidMaster brand control valves there is also a hard white plastic tube that is tapered, with a flange at the wide end, as shown in the same photo. There are actually two flanges: one big and the other small, either of which can be easily removed or cut off. The tube is highly unusual because it flares out very gradually from 8.4mm at the tip to a maximum outside diameter of 10.2 mm just below the small flange:... sizes that many men will find ideal for urethral sounding. It is shaped like a long widening penis plug that narrows back to a short neck just below the small flange. If the size is right for you, it is an excellent way to stretch and enlarge your peehole, because it is so gradually tapered. And if you ever get it all the way in, it will pop into place and stay there like a flow-thru penis plug because of the constriction at the flanged end. All it needs is a little polishing to remove any ridges and other imperfections that might be present.
If you have any DIY tips for how other common items can be repurposed for penis play, without looking hokey or costing a lot, please feel free to show them here.
