I've noticed a lot of art where micros are used alongside toys or macro partner penetrating the macro who's doing the unbirthing, but there's not a tag for either situation. So what would be a good few tags for these situations?

Here's a few ideas I had:

Along_for_the_ride - This can be used for both toys and actual cock. If the micro is tied to a dildo or is unbirthed before the macro is penetrated by another macro, I feel this tag explains it well. They're along for the ride, and they can't do anything about it.
Examples:
https://e621.net/posts/2007482?q=unbirthing+cum_in_pussy+mouse
https://e621.net/posts/1782489?q=unbirthing+cum_in_pussy+mouse
https://e621.net/posts/917922?q=unbirthing+cum_in_pussy+mouse

Tied_to_toy - Self-explanatory
Examples:
https://e621.net/posts/224777?q=unbirthing+sex_toy
https://e621.net/posts/1307835?q=unbirthing+sex_toy

Unbirth_with_dominant_macro - Kind of self-explanatory, same as along for the ride, just different wording.
See along_for_the_ride for examples

Unbirth_sex - Anrother simpler way to say along for the ride, though I can see this being used more for micro who's cervical penetrating the macro, so maybe not a usable tag?

unbirth_threesome - Maybe?

macro_on_micro_on_macro - A little long, but gets the point across I feel.