Well actually it's not all that messy. If you want to try some without having to get all the stuff together I'll coat them for you.
I can buy the bullets and coat/send them or you can send me the bullets you want coated. I am limiting this to 17/20 calibers right now and in lots of 50. Coating will be with .6 micron WS2.
Let me know and we'll discuss how much it'll cost you.
KO
Here is how I do it.
I use large pill bottles, that way I can tumble brass at the same time if I like. The bottles I use will hold a couple hundred bullets but I only do 100 at a time per bottle (I have 5 bottles).

AA battery for size comparison.
Here is what the inside looks like (with burnishing media).

Yep them are .177 BB's
See I told you! Shhhhhhh, don't tell my wife, I took them from her Red Rider stash!

Here is how my 39BK's turned out.

If you think handling the little 20 and 17 caliber bullets is a chore just wait until you get your hands on some of these slippery little gems!