We have a brooch with a faux tree branch and acorns/leaves and metal rounds are strung from it.  The branch is plastic with the balls being metal, acorns/leaves wood.  I don't know the exact age of this piece I would estimate it dates somewhere between the 1990's and mid 2000's.  It measures about 2 1/4" across the top branch x about 3 1/2" from the top of the branch to the bottom of the center leaf.  To give you an example of size the leaves measure about 1 3/4" x 5/8".  It shows some very minimal wear.

Brooch Wood Plastic and Metal acorns and leaves