I see them everywhere, based on my observations I don't think anything furry would make them gasp :p but sweet for thinking of others.
Spoiler
I too have a knotted toy, though I'm way way too tight to take him, and I'm much more about my muzzle than my rump, so I need to work on my throat instead >///> but until then, he's very fun to look at, frot with, and imagine while I suck him...
I have some decently sized plugs, they're okay. I have a hook with a ball on the end that is great for direct prostate stimulation. I don't know if your into gags, but if you are, I've been thinking about getting a gag from https://silencilicone.com/ since I heard about them.