SLIDESHOW: What to Put in a Car Emergency Kit
Canadian Tire has a couple of different folding shovels. One is bright yellow and can also be used as a roadside cone. It costs $11.99. The other is listed as an ice fishing shovel and comes in its own carry case for $19.99.
I also found a folding shovel on Amazon for $16.59 that retails for $23 on Mountain Equipment Co-op where you can see more details about the shovel.