There is this sort of electric flossing imlement called the waterbird or somthing like that and that thing is so freakin strong on the clit it really desensitized my clit for hours after. It was awesome beacuse it was so powerful and only required one AA battery.
I have used the back of big brushes for spanking. I used to love taking my bath at my mothers home when I used to live there. She has a sort of jacuzi and I experimented by placing my pussy above one of the water jets udner the water. It was so intense, best orgasms ever bcs the stimulation is so deep.
I have used scarves for bondage I onced had a friend over at my house when I was 15 to show me how to do a blowjob using a plastic flashlight. When I was 16 I inserted the stick end of a gilette razor in my pussy and experimented with thrusting.
I had a friend who suggested I roll up my pillow really tight and get on it and pivot my hips to stimulate my clit but I hought it was so inconvenient compared to using my fingers.
I don't use that many non sexual objects today though, maybe I should...