Go to Home Depot, or Lowes and take a look at their lumber section.
If it's for display
-you could make a wooden base that is about 16x24" (or whatever size you want)
-get some 2x4s and cut 3 lengths out of it (2 of each length)
-cut out a semi circle on one end of the 2x4 (this would be to cradle your dowel)
-tier the 3 levels of 2x4s, spacing them apart
-put a couple screws through the bottom of the wooden base, up through the 2x4 riser. (adding some carpenter's glue would be a good idea too)
-cut your dowels to length, and place them in the semi circular cradle in the 2x4
-then add a couple coats of paint, and you're done
-if you don't want it to look bulky, you wouldn't have to use 2x4's, just use something that will give you enough support. If you choose a smaller piece of lumber, you could use some small L brackets at the base.
You would need some power tools for this project, though
This may be a more expensive option, and it may take a bit more time, but you can make it totally custom.