Event Registration/RSVP Mod NOT in Calendar

[CentralGarrison]

Hey everyone! I'm not sure if I'm posting this in the right place or not, but I'm not sure where else to do it. If it should be somewhere else, I apologize.

I've been looking high and low for a mod for the latest version of vBulletin that will fill a need where our old phpBB forums did. I'd like to have an RSVP type mod that a user can add to a post on the forums, NOT on the calendar. The one we had in phpBB worked a lot like a poll, where it would just appear at the top of the original forum post. The poster could choose the items they wanted (yes, no, maybe, etc) and when a forum user clicked on one of the options, their username would appear under that option immediately at the top of the thread.

All the searches I do come up with Farcaster's awesome calendar mod, and I'd love to have very similar functionality but on forum posts instead of calendar events.

So, does anything like this exist? If so, I'd love to know where!

Thank you all for reading!