Butt plus are great, you can get loads of variety, vibrating ones or even inflatable! Can also choose from many materials. I may prefer them to the dildo, I don't know!
It's different. They also I find are cheaper, I can get them in uk for 10-20 pounds. Do some Google searching you can get some great deals . My old dom even got at 24K gold one!
There's **** beads you could give a try as well, if you pull them out while you orgasm that's great.
There's so much out there to try out, it can be expensive though!
M.