Your response has inspired me to create a list of corals and critters I'd be willing to part with for a hood. I am fairly new to the hobby, so I'm not entirely positive on how much some of these things are worth, so sorry if posting some/all of them is just an insult! If anyone is interested, PM me what you'd want and we can work it out! Also, sadly, I don't do SPS. I shall refer to these corals by the names I was given when I got them! I'm not interested in anything but a biocube lid (or lid and tank if that's what it takes). Can't post pictures as I don't have a camera :(, but for the ones I purchased online I can send you the last pictures that were taken of them (they have not grown much yet for the most part).

Medium/Large Specimens:
bubble coral
crater coral (looked it up, it looks kind of like a meteor shower, and is a dark red)
green closed brain (very slow grower)
cyanarina (sp?)-button polyp-about fist sized brown and bright green
trumpet coral-7 large heads

LPS frags:
blueberry flowerpot
Australian duncan (blue eye, purple fronds)
rainbow lobo
twisted fate favia
acan lord purple/blue/green
kryptonite candy cane-3 heads
blazing neon torch
hammer coral (this guy is rehabilitating from his last owner, so he's looking fairly healthy now but there are some remaining signs that are going away quickly)

Zoo frags (a lot of these are available separate or in combination on one rock)
radioactive dragon eye
melon
green sparkle
seagrass sponge
watermelon
electric watermelon
kedd red
watermelon sparkle
radioactive sparkle
green/bright green eye (attached to the same rock as the hammer)
large maroon zoos

Other coral:
pink mushroom (big)
red mushrooms
green mushroom/bright green irregular stripes
green palys

Fish/Inverts:
diamond goby (I know, ridiculously common, but in case anyone's interested he's about 2.5 inches)
bicolor blenny male-displays/color changes regularly, 1 inch long, in good health
decorator spider crab-about 6 inches fully extended now and will get bigger. DOES NOT DECORATE WITH CORALS. Seems to like plants and some sponges, and he hasn't damaged anything in my tank. Has molted twice in the past 1.5 months and takes food from hand.
tuxedo urchin-odd orange coloration

I also do freshwater (loaches galore) and have some non aquarium (gaming, etc.) items I can trade.