If you'll send me your address, I'll send you some gel.
I have tons of it, I use it in my gardens and flower beds and hanging baskets. I always keep a drum on hand.
Mine is a finer grain than Sean's link, it's a bit easier to work with. When hydrated the pieces are a little smaller than your pinky fingernail.
An ounce of this stuff makes a gallon of gel, so you'll want to go real easy with it.
