Theres some really nice threads on the forum if you have a dig, with lots of ideas and recommendation.
This one on P- spotting springs to mind.
I know the gang on here often recommend fleshlights too.
Sadly im not the best to ask about this but if your patient I’m sure someone else will drop some suggestions.
Having a quiet wander through the shop sections is often a good way to get some idea of what you might be into.
Butt plug wise, other materials like glass and metal are also great and very different sensation to silicone.