My NB Miata (1998-2005) is my weekend therapy car, and over the years I've added budget-friendly mods and accessories that make it more enjoyable without breaking the bank. Every item on this list is something I've personally installed and tested β from audio upgrades that actually sound good in a tiny convertible to practical accessories that solve real NB ownership problems. No expensive brand-name parts, just smart choices that deliver real results. If you own an NB Miata or any small roadster, this list will save you time and money.