Here's some tips:
Use walnut...you can get it from lots of places, including Lizard Litter from Petsmart...just make sure it's all crushed walnut
Cut a USED dryer sheet into quarters, and throw those along with one capfull of NuFinish car wax (in the orange bottle) in and let it tumble until the clumping stops before you add brass. Shines the brass, holds the dust down, and keeps the media cleaner longer. Make sure you put a used dryer sheet in each time.
Don't decap before tumbling unless you like cleaning media out of primer pockets and flash holes.
Since your girl has possesion of your testicles, I imagine you do the sewing
. Either make a cloth cover to fit the slotted lid, or just go to dollar general and find a cheap plastic bowl whose bottom diameter matches the lid, drill a hole in it and use it to cover the slots. JUST the bottom to cover the lid...don't use the whole bowl and cover the unit and burn up the motor. Since you're loading inside this will keep the lead and media dust from getting everywhere. I don't bother, since I load in the shed, and the lead dust may help me expire and escape sooner.
Enjoy, Roach boy...no excuses left. Get busy