I am now an official thread junkie.
I have been doing a zig-zag stitch safety seam on all my dryer sachets. This wasn't a big deal until I decided to list two dozen new fabrics for sachet duos and trios on my Etsy site (and to make enough stock of each to cover orders). Then I saw exactly how much thread a zig-zag stitch can take. So I went for it.
Of course, I still need a huge spool of white for doing inside seams, and a large spool each of black and dark brown comes in handy. Plus, people sometimes give me thread. So I don't think I will be getting rid of my old thread rack. Although, it does look a little empty right now, since some of what I had matched the slots for extra spools of thread in the Cabinet.