I’ve had several surprises when getting home to upload pics and ID and finding out that something was endangered or an iNat first. Probably my rarest would be this plant from West Texas with only 7 iNat observations from one small area https://www.inaturalist.org/observations/74806952
and this beetle which isn’t super-rare, but mine is the only obs. from Texas https://www.inaturalist.org/observations/1701659 and also happens to be my very first observation to iNaturalist.