If you use dip pens but don't care for the look or feel of the standard plastic nib holders, you can make your own out of bamboo.
First, you'll need some bamboo:
You'll also need a wooden dowel, wood glue, a saw and some drill bits.
Using a saw, cut the bamboo into the lengths you want.
Next, you need a wooden dowel. The 3/16" size works well for standard nibs; for the smaller nibs, use 1/8". For each nib holder, you'll need a dowel around an inch long (2.54cm, to be exact).
To fit the dowel, you need two drill bits. Drill the first hole in the end of the bamboo using a bit the same diameter as the dowel (I ended up using a 13/64 rather than a 3/16). Green bamboo is soft enough that you don't even need a drill--you can just hold the drill bit by hand (but wear gloves).
The second hole is to give clearance for the shank of the pen nib (the part that fits into the holder). This hole is a size bigger and not quite as deep--1/2" to 3/4". I used a 15/64 bit.
Put a drop of wood glue on the end of the dowel and insert it so that it's flush with the end of the bamboo:
When the glue dries, you have an inexpensive and stylish nib holder. Actually, you should have several--these are so cheap and easy that you can make a batch in different lengths and diameters to see which one suits you best.