What can I use as a toy?

I really want to learn to ride a cock & I don’t have actual sex toys. What can I use that’s safe in replace of toys that will stay in one place so I can ride it? Also what can I use to protect myself from anything harmful when I use things that aren’t meant for insertion. (I haven’t tried anything yet bc I want to be extra careful, but I’m super horny & need answers now. Thx)