Lifting straps:
Power bank:
Card wallet. Looks nice and $$$ without the flashy P4P vibe. You can even get high end brands like Prada for under 100 just gotta shop around. I got mine for $30 at an outlet store:
American Express Platinum card. Its not under $100 ($550 a year) but if you travel abroad and especially more than once a year; when you factor in the $200/yr Uber credit + $200/yr Airline credit + TSA PreCheck + Global Entry + top tier travel and car rental insurance + Priority Pass airport lounge access (free food, wifi and sparkling wine on comfy leather chairs, fuck sitting at the starbucks) + Boingo inflight wifi access + Starwood Marriott and Hilton hotels gold status (free breakfast, wifi, late checkout, early checkin and room upgrades) + Elite status on Avis, Hertz and National car rental + 5x points earned on purchases it's definitely worth it. Just the signup bonus flies you to SEA and back for free.
Don't sign up on your own; make sure you get invited by an existing cardholder, that way you both get a bigger signup bonus.
Put it in your designer card holder:
Kitchen scale. I always wondered why I couldn't bulk up and never realized how shitty my diet was until I started calorie counting:
Pullup bar. Nice to be able to do some pullups at home when you feel a surge of energy:
I could also include lifting belt but I feel like it's better to de-load and learn to lift with correct form instead of getting help from the belt. Professional lifters could maybe chime in here.