Your drawer sounds like Kitty Paradise!
I use mostly Robison Anton thread for embroidery work, RA filament for quilting, and then Gutterman for regular sewing. The RA threads are small cones and most have a snap-bottom for those annoying loose threads. Gutterman has a little built-in thread holder at the top of the spool.
I keep my Gutterman in a small clear acrylic case (they lie flat prettly well so I can arrange them in shades and see exactly what I have.) The RA cones are kept in a clear oversize rubbermaid shoebox. I can easily fit 24 spools in a box. For some of the RA cones that don't have the snap bottom, I put a small piece of tape on the bottom and then just loop the loose thread under the edge. It holds it in place fairly well.
Growing up, my mum had one of those slanted thread hangers on the wall above her machine. I remember I didn't like it because of all the dust - not to mention the cat occasionally couldn't help herself and "oops" there went a spool every now and again. The bin method works for me quite well!
Please, please don't make me tell you how many bins I have...or spools...I don't know if I am strong enough to admit my addiction...MUST GO BUY MORE THREAD ! ! !
:P