Miniature-Tek is running a Kickstarter campaign in order to fund a line of textured base stamps.
From the campaign:
Our Texture stamps are designed to allow anyone to easily create low cost great looking bases for their wargaming figures that look professionally sculpted.The texture stamps have patterns like urban ruins, bones, rocks and battlefield debris. To use the stamps all you need is to put a little sculpting putty on your base and press the stamp down for the pattern you want, then allow the putty to dry. Cutting the putty away and multiple stampings can be used to create custom bases that give the sculptor endless possibilities of bases for a fraction of the cost of resin bases.