I've been having fun listing die cut shapes like these in my fabricfascination shop:
I like the way Robayre used them in her framed yo-yos
Or how about this cute headband by lovejill
Then there is this lovely wall quilt by MoranArtandQuilts
And if you are really ambitious, you can make a whole quilt out of yoyos like this vintage one for sale in
Just a few examples of what you can do with yoyos.