Stole a bunch of condiments (ketchup, mustard, hot sauce) from my college cafeteria.
Ate a bunch of ketchup sandwiches as a kid.
Ate half of my roommate's philly cheeseteak when we had the drunken munchies and went dumpster diving for a box of donuts.
Emptied out my garbage recycle bins of all plastic bottles and tried recycling it for cash, took 10 minutes and felt grimy as fuck and only made less than a dollar. Feels bad man

Used the same empty plastic bottles for about a week and filled up my schoolbags with them while refilling them at the water fountains. Sucks being a broke college kid, luckily tons of kids do this.
Skipped lunches during high school to save up my allowance to afford a pair of Jordans, when I should have just gotten a job.
Used latex gloves as lifting gloves when I was a noob and kept tearing my hands from deadlifts.
Used my thick dictionary as a board to do board presses on.
Went as an MMA fighter for halloween only cause I couldn't afford or think of anything else. Lol I just put a marker under my left eye to make it look like had a shiner and wore lifting gloves, oh an I had pretty bad fake tatts on me but you couldn't tell since I was wearing a hoodie.