Thank you so much, Robert! Whenever any of you MAASTards is in the New Branfels area, you need to stop in Darby's!
Thanks to Robert, I now have a 20 long tank, stand, cpr bakpak, some live rock, and sand! 
Still needed--used is great:
I could use a 30" light (nothing fancy--just enough for some easy softies, easy algae and fish)
Filter (maybe biowheel?)
1 or 2 powerheads
heater
thermometer
5 gallon containers for saltwater (4 or 5 hopefully)
Test kit(s)
Maybe a little more live rock
egg crate for the top
extra shells for growing crabs
Animals I am hoping to put in:
nassarius snails, cerith snails, blue/scarlet/red leg crab combo
Cleaner shrimp (can I fit a pair--or just one?)
Pair of perc clown fish
Possibly goby and pistol shrimp
Possibly 6 line wrasse
Possibly emerald crab
green stars
various zoas
various shrooms
red sea xenia
maybe colt coral or other leather(s)
cant decide between bubble coral and toadstool (for clowns)
a pretty algae or two
Let me know what you have available and for how much. Also, feel free to voice your opinion on my choices of inhabitants. I doubt I can get all that stuff in there, so tell me your favorites--or make other suggestions. Thanks, all!
The moment his HEAD is in view, hit it with the LIVE ROCK!