Thanks for the responses.

Nah, grommets aren't a deal breaker, I was just curious. The art on the back of the 2 person blanket packaging shows what look like grommet holes along the edge, so I was wondering if that was just the artist drawing a generic "tarp" instead of the actual product (or maybe recycled art) or if the things had grommets.

Pebbles work fine. =)