The first thing you need to do is decide which colors you want to support the reanimator theme in. Black is the go to answer, but there are solid reanimation options in white as well. Enablers are going to be mostly blue or green. Once you know the color options, then envision what you want a good reanimator deck to look like in your cube. Do you want it to ...
Mono-Red. Aggressive creatures and burn.
White Weenie. Aggressive creatures, cheap removal and equipment.
Mono-Black Aggro. Aggressive creatures, removal and discard.
U/W Control. Counterspells, board wipes, removal, card draw and a few big finishers.
5-Color Control. Like U/W but with more powerful spells and mana-fixing.
Reanimator. Put fatties in the ...
At the MTG Salvation forum (http://forums.mtgsalvation.com/forumdisplay.php?f=349) there are several categories regarding cubes. You can post your cube list (1000+ there already) there, but also discuss cards and archetypes.
The best place that I know of is http://www.reddit.com/r/mtgcube
Other options include tweeting the link to your cube with the hash tag #mtgcube.
Quite often if you do one or both of those, people will draft your cube using cubetutor, which will then give you drafting statistics about what cards are taken highest, and you'll usually get direct feedback ...
Important cards to consider (if you like the most powerful ones)
Dance of the Dead
Thirst for Knowledge
Akroma (white > red)
Angel of Despair
I highly suggest a cardboard box. I got a 1600 size box for about $10.
On the topic of lands and tokens, I keep 60 of each basic land (so 300 in total) with the cube at all times sleeved. my cube is from Khans/fate/dragons so tokens aren't really an issue, however I keep 10 of each token sleeved in a different color.
I don't recommend using the cub3 from ...
Tolarian Community College did a fantastic review of MTG Cube Deck Boxes:
Ultra Pro CUB3: 900 cards in 80 USD cardboard. Home use only. F
Grimoire: 75 USD plastic. Home use only. C-
Ultimate Guard Stack'n'Safe: 2x480 cards in 2x12.50 USD plastic. May need an elastic band.
Aaron Cain: 125 USD* (prices vary) custom wood. A+
Ultra-Pro has released a product for cube storage:
The MOX CUB3™, designed for Cubing, features a unique 2-level storage
design. Holds 900 standard double-sleeved gaming cards in Ultra•PRO
PRO-Fit & Deck Protector sleeves. Compartment for dice, stones and
other accessories. Secure magnetic closure. 8½” x 8½” x 8½” (215.9mm x
215.9mm x 215.9mm)....