I kept the fancy stamps so I can do them over and over and have them look similar. I might even have a little bag of the glass somewhere too.
The kit even came with number stamps which I placed the child's age in the center of their print.
Even though these are two years apart, Olivia was three on the first one but hadn't yet turned five in the second.
As they age and get dirty it accentuates the impressions in the stone. I used various glass shards and baubles to decorate them. It's a quick, easy project that will last a tremendously long time as long as no one drops them. It will be neat to have these year after year, then adding grandkids to the mix.
I might have to make my own mold this year though, to fit them all in.