Propagating coleus for sale is really easy.
Also have you heard of Aqua sorb, it's a polymer thhat looks like dry grits when it's dry. a teaspoonful in a quart jar of water will yield a quart of water crystals that look like ice.
They hold the water and release it to the plants as they need it.
I'll find their address if you want it.
There was a co-op at DG for it.