Reflective Fabric?

[tigra217.livejournal.com]

I am attempting to make a construction barrel costume for Halloween but I am having difficulties finding reflective fabric for the stripes. Does anyone know where to find reasonable quantites of reflective fabric or have any suggestions of an alternative? All I'm finding is huge bolts of 100 yardsish with limited consumer availability. The costume is being modeled after this type of barrel.

Thanks!