Did you ever play "Button, Button, Who's Got the Button?" It was another simple party game I haven't heard of for years, but played many times as a child. I won't go through the details of the game, but if you've not heard of it you can read a simple explanation here. Games don't have to be complicated to be fun!
The Scribble Picnic theme of Buttoned also brought to mind times of going through Mom's collection of buttons, then later of my own kids going through my collection. At some point I came in possession of a small basket labeled "button basket" and started throwing buttons from old shirts in it. Mine actually has handles, and most of the buttons are white, but it is similar to this colored pencil sketch.
See how others buttoned up their posts this week here.