Memories of that day can be helpful âEU" you should remember where have you seen that thing last and search there.Map also can be usefull for your task. And finally you can climb up a tree and ask a big cat for a hint âEU" you will see all the events of that day again.
But sometimes it's not enough to just find a lost thing. Some residents of the park may already be using it for themselves âEU" be it mice or ants. In that case you may have to bring them something in exchange for a lost thing âEU" only then you will get it back.