I think we Should do a craft day and Mass produce some of these Rubber Door Mats pressed into a concrete mold and later removed, to make stepping stones. There are lots of other smart concrete project ideas on this page.
Cement Handprint Stepping Stones Video Instructions
These concrete stepping stones are a true reflection of your garden when imprinted with leaves from the surrounding plants. These can be made in an afternoon and cost less than $2 each in materials, making them a thrifty yet beautiful garden DIY project.