how many days does it take for an leaf pile to appear? I kind of need one and the ones in debug wouldn't work for my purposes. I want Selene to be able to jump into the pile
If you have a tree, and space around it, on your lot, then leaves can gather on the ground. If you click on the leaves on the ground and you can rake them into piles, depending on how large an area is covered in leaves.
They do tend to pop up on their own around the neighborhood after a few days, though it might take longer if you have seasons set to last 4 weeks.