I have written previously about why one should be prepared to spend money on health and fitness. No point achieving financial independence if you don't have the health or fitness to allow you to enjoy your freedom.
While fitness and health is more a question of time and willpower, having extra passive income to spend gives you optionality in how you pursue fitness and health.
I am a fan of Nike Air Pegasus (incidentally so is Dividend Warrior - he posted an unboxing video of his Pegasus 39) as it has been around for ages and is seen as a 'reliable workhorse' shoe even if it it not the fanciest or the best.
More / Better shoes / Apparel?
My main running shoe is the Pegasus but recently I wanted to buy another pair to leave in office for lunchtime runs. I think I bought my current Pegasus for $79 at a sale but recently, there was an even bigger sale of Pegasus 39 in a less popular colour for $53.94. I immediately grabbed a pair even though the colour was not my favourite. I also bought a Winflo 9 (very nice colour) for someone at $59 (Pegasus is a more 'expensive' shoe than Winflo but $59.94 is still a decent price for Winflo).
I confess that I'm probably not done with my shoe buying as I probably need a more cushioned shoe for longer runs. Unfortunately, the higher end shoes of all the main brands with max cushioning, don't have as much discount as mass market shoes like the Pegasus (apparently Nike's most popular running shoe). I'll still try to wait for a good sale though.
Better Earbuds
Next, I am exploring running earbuds. My current Xiaomi earbuds are decent but for running, I find myself having to regularly 'adjust' them. So I am looking at perhaps something more expensive but dedicated to runners, and also whether I should get one with built in memory so that I can play music without having to carry my phone.