Pushing limits is part of the common jargon in BDSM. It's a journey that takes patience and time. But when impatience triggers, it can be appealing thinking of shortcuts.
For me, a single dildo and position tends to last around 5 minutes, so to get a session and not end up bored after 10 minutes, I have learned to combine a variety of toys and positions to experience different sensations. The key to pleasure is in the variety!
My preference is having a selection of silicone, vinyl, PVC and metal. I try to have a few of each, because each material brings different sensations and plays, and there are days that my ass is not feeling like enjoying one, so I switch to another material.
There is this well known say in Spanish that it is with patience and saliva that the elephant fucked the ant. I think that lubricants and dildos might have helped speed up things between the ant and the elephant, but for sure patience has been key in my own journey.