Anal play must be safe and hopefully inexpensive...this is how I made my fail-safe monopolar electric anal probe.
Buy: Cigar in aluminum tube - $8; Spatula - $3; Bolt, 2 washers, cotter pin - $ 1; Nylon cord - free
1) Buy a cigar in a smooth brushed aluminum tube.
2) Drill a small hole in the center of the cap.
3) With the cap tightly on the tube, drill a small hole through the middle of the threads, through and through.
4) Cut the handle off of a plastic nylon spatula and drill a hole though it.
5) Using flat washers at both ends, bolt the the aluminum cap to the spatula handle.
6) Place the tube on the bolted cap, and put a small, straight cotter pin through the previously drilled hole in the cap.
7) Place a loop of nylon cord through the loop in the cotter pin. This is just an extra grip.
8) Next you need to attach your alligator clip to your monopolar probe. I just put an insulated clip on the cap bolt.