what did jem and scout find in the Radley's tree?

Here is the list:

2 "pieces of chewing gum" (Scout removed the wrapper from the gun when she removed it from the tree, Wrigley's Double Mint)

2 "scrubbed and polished pennies, one on top of the other" (confirmed to be a 1906 and 1900, both Indian-heads by Jem)

1 "ball of gray twine"

2 "almost perfect miniatures of two children" (Scout and Jem)

1 "whole package of chewing gum"

1 "tarnished medal" (confirmed to be a Spelling Bee medal from before the Finch children were born)

1 "pocket patch that wouldn't run, on a chain with an aluminum knife"