Last week I picked up a cheap wooden photo frame from the local second hand shop. It was very plain, but in good condition. A jazzed it up for me using a selection of buttons from our button jar.
A spread all the buttons out on the table so that she could select the ones she wanted to use. In order to stick to the frame, the buttons needed to have a flat back. Then she added some glue and started sticking buttons all around the frame.
Once it was dry we put a photo of the kids with their great grandmother into the frame, and it is sitting on our dining table.