Welcome to My Lion King Forum, jinx!
First off, Rafiki's tree is similiar in structure to a African boabob tree, or an
Adansonia digitata, which are mostly populated in western, northeastern, central, and southern Africa.
Here are the angles of the tree inside and out from the first movie:
^This picture is from the opposite side angle of the tree in the first picture.
Here are more pictures of the tree in
Simba's Pride. Please note it looks slighty different than from the one in the first film.
^This is the tree from a northern angle.
The different items in the tree according to the screenshots appear to be hanging fruits dangling from a vine, a large tortoise shell, dried fruit paste in a shell (the one seen below in pictures 2 and 3), and Rafiki's stick.
Well, a boabob tree stands up to 25 meters tall according to this
source while a male mandrill stands up to 3 feet tall according to this
source. Convert 3 feet into meters, and you get: 3 ft equals 0.9144 meters. So Rafiki stands less than 1 meter relative to his tree, which equals 25 meters.
Hope that helps.