Tubeless conversion on schrader valve rims
I mean, put enough Stans in to the wheels, and you can run tubeless on just about any rim setup.  

If you have non-tubeless tires, you may run in to an issue with the tires themselves being too porous, and that is hard to get around.  But I imagine that the combination of rim-tape, grommet, and Stans will be fine.  The rubber wedge/plug thing on the base of the Stans valve stems is pretty wide, I bet it would work even without the grommet.