For some of your stuff, go to Wal Mart or Target and get travel sized bottles for some of your stuff. Not all of it will work, but see what you can do.

Also, don't pack a chainsaw. I did that on my way to NYC and they didn't like it.

I rarely check in bags. I pack everything  in one of those wheely suitcases, plus my little backpack purse, and bring them on the plane with me. I usually pack like this.

-Pack all liquid items of 2oz or less in clear ziploc bag.

-Roll your clothes instead of folding them to prevent wrinkles.

-Pack trail mix or Clif bars because flight food, except for maybe the small bag of pretzels, isn't very vegan-friendly.

-Pack one small paperback or magazine that you can leave behind once you're done reading it.

-Pack an extra bag within your carry-on bag, like the ones you take with you to the grocery store, so you can shop and carry back with you on the plane.

-Pack lightly, the minimum amount possible, so you can leave room for all your trip purchases and not have to check in another bag.

-Pack one light pair of comfortable flats or sneakers. Wear your heavier shoes or sweaters on the plane.

-Instead of packing the whole bottle of foundation, lotion, toothpaste or other liquids, fill an empty lip gloss container or contact lens case with the contents. When you're done using them, you can just deposit the remaining plastic container in a recycling bin.

-Pack postcard or letter stamps, addresses of friends and family, in your wallet so you can send postcards during your travels.

Hope these tips help. Have fun on your trip.

oh wow do you have liquid size restrictions on domestic travel? that would suck. well, maybe not, we travelled for eight months with everything in 100ml bottles or smaller.
that was mostly choice though, not necessity, we didn't catch that many planes.
my pick... follow Saskia's ideas, they're way better thought out than anything I could come up with right now.

hmm. Pleased we don't have that for domestic, when we go down to Wellington to visit my brother we like to take wine : )
We had a pack of containers like this while we were travelling:
http://www.kathmandu.co.nz/productimages/LARGE/1/3059_16296_1368.jpg
if you've got some little bottles/pots, you could just pour/scoop some of your cocoa butter into that for the time you're away?

Almost any drug store or Big Box will have empty travel bottles OK'd by the FAA for air travel, and they are pretty cheap!

Depending on how long you are going, I say pick a color and one neutral and stick to it, I tend to do black/ white and grey.  One pair of slacks that can be dressed up or down, one skirt, one long and one short sleeved shirt, two pairs of panties, one bra of neutral color, one or two pairs of shoes and wear the bigger pair, maybe one light pullover.  Stuff like that can be worn more than one way and you can wash in the sink at night.  I love my microfiber/ yoga pants in black, they go with everything and are comfy enough to sleep in but I can dress them up to go out in too, I have a skirt and tunic shirt in them too and they don't wrinkle ever!  Ipod is great, try getting a few books on disc at the library and load them up on the pod, and you have "reading" material smaller than books.

Go light on makeup, pack the bare minimum of non essentials.

this is my must haves list
Shampoo/conditioner
toothpaste
aloe vera (good on body and face, so no lotions or moisturizer needed)
glasses or contact stuff
sunscreen
tooth brush
small bar of soap
mascara
one or two neutral eye color
brown eye brow pencil/ also works as eye liner
one lip stick, a pinkish brown always looks good and can be a cheek color if needed.

small hair gel or mousse.
brush or comb.

You can buy a box of baking soda when you get there, use it as toothpaste and deoderant.

Do nails and toes before leaving, don't pack nail polish.

I have traveled for up to two weeks with just a little backpack, it isn't super easy, but doable.

How long are you going to be gone?  Most of those empty, travel-size bottles are 2 ounces, which doesn't seem like a lot, but I find that two ounces of shampoo lasts longer than you'd think.   Get a little 1 ounce or so tub and scrap some cocoa butter into that.  If you need more than that, scrap cocoa butter into two tubs.  I've also put toothpaste into a little tub.  It's not as ideal as a small tube, but it works.