The dress code where I work is a bit below casual: Few people wear shoes, and shirts are often optional after an afternoon of surfing. To be blunt, we're a bunch of slobs. To combat this, even if only in a mocking fashion, I started Formal Friday. Sort of like causal or Hawaiian shirt Friday, except with ties, dress shirts, and classy footwear.
This has resulted in a literal explosion of cheap and eye-bleedingly bright ties. My tie rack just wasn't up to the task, so I had to improve it. I'm sure I could have bought something to do this very job, but that's just not my style -- isn't it always more fun to make whatever you need?