Yes exactly! How many leaves you've stepped on! People on the street who noticed you, how many left socks lost, things like that. This makes me excited to put in the specific facts. I was considering making it randomized, but I think I'd rather have really specific things to keep it pretty and close to the character.
The past reincarnations can be any living thing! The Nestle is actually a large place that has every. single. past. life, but it's simplified in game. There will be ambient bird sounds from all the birds you've been. One of the people is probably going to comment "this soul seems to like to be birds and ferns."
Thank you for the questions it really helps the brainstorming <3