I saw this idea on The Activity Mom's blog.
What’s in it:
3 buttons,
5 shiny stars,
A plastic mitten,
Tiny bell,
Glitter letters, (W for winter, C for Christmas and S for snow)
Plastic candy cane,
Small spoon with winter sticker,
Three white pompoms,
A piece of gold ribbon,
A piece of garland
And popcorn kernels.
The jar is plastic and some candy came in it originally. I have three of these jars and think they work well for things like this. The candy cane, mitten and spoon were all cake decorations.