If you are looking for a great way to take your pen and ink supplies with you, there is a very nice storage box to use.  It is called the Artbin Sidekick, and I have one of these as well as another of the Dick Blick version of the Sidekick. With the Blick version being just $12.59, this makes a very affordable, spacious storage box.

I keep all of my current ink bottles in the bottom half.  Currently I have 38 one-ounce bottles of ink stored here.

In the top half I keep two Syringe cleaners, vintage pens, ACEO-size boards, sample size bottles of Rotring Artist Color ink, etc., and in the top's top container I keep crowquill pens and extra nibs.

Along with my leather pen case that holds 24 filled technical pens, I can work anywhere.