I stumbled upon this GREAT idea as an alternative for a sand ceremony - an hourglass ceremony. You get a fillable hourglass and two different colors of sand, pour both in like a typical ceremony, but then the symbolism is that the colors will become more mixed as you turn it, just like your lives will become more entwined as time goes on. I thought it was a SUPER cute idea with a twist on the usual. The only problem I've found so far is that the only hourglasses I've found thus far are a hundred dollars minimum. I'm still searching!