In my lovely hometown Kelantan, it is quite possible to get hold of Keropoks such as the one pictured below, assuming you know where to look for it, and assuming you have the time to leave them out to dry in the sun, and assuming that you bother to fry them yourself (or get someone else to fry them for you ^^).
Once you sink your teeth into one of these big babies, you just can't stop! (^,^)