Nearly 2 weeks ago I planted the Aloe vera hybrid seeds that were given to me by my mother-in-law. I can see sprouts now. If these free seeds work out well, I may try propagating more succulents. Maybe I'll have a wacky rock garden on the side of the house which has no irrigation. Also the Aloe vera clone I yanked out of the ground has done well. This is on the easy list of plants to clone/propagate and that's good right now. Next, rhododendrons and azaleas.
mints - spearament, chocolate, etc. Super easy to take root divisions or cuttings or anything else. I started with this one and would suggest using these fast growing plants or coleus to practice with in the beginning.
lavendar - agustifolia, intermedia, & spanish ( could be stoechas or dentata )
coleus - multiple unknown species. this is a very easy plant!
Succulents & cacti listed in other posts.
rockwool with lemon to bring ph down to 6.0
Coir: a coconut husk & castings & potting soil
earth juice rooting hormone
small containers for soil mix
light and temp control -- indoors under florescent grow lights
Accumulate species that do well in the area to multiply and thrive to ensure future gardening successes. this will also allow for an inexpensive recovery from failures. Provide a cheap rotation since mints and herbs take over containers, extraction and division can be used to keep a healthy rotation thriving.