Bro when I was a kid I was into it all. Tamagotchi, hyper colors everything, Pogs, Beanie Babies, Slap bracelets, scooters (not the razors scooters the earlier BMX scooters), friendship bracelets, that kickball with the plastic ring you bounced on, moon shoes, Jams, Big Dog, I'm a dude that loved him some Polly Pockets, windbreakers, bomber jackets, M.U.S.C.L.E, G.I. Joe, Pound Puppies, Garbage Pale Kids, those puffy monster balls you squeezed and their eyes popped out, Shrinky Dinks, and then by the late 90s I was walking around with 30" cuffs in my Kikwear and a Kangol.
Edit: Big Dawg changed to Big Dog, changed 80s to BMX.
I showed this to my friend and he reminded me of the time we got really into Swatch Watches but our parents wouldn't buy them for us so we stole one and passed it back and forth until we got caught.
Bitcoin. I mined some (might've even been on my CPU at the time) back when it was easy to mine it. Not a ton, but enough that now I have to explain that despite thinking blockchain is just straight up a scam, I do have some Bitcoin in a wallet on my hard drive somewhere. (That I've never done anything with.)
I got some parachute pants when I was around 11 or 12 because I thought they were cool, and were the only fad I actually got excited about. Those were some comfy pants!
In high school grunge got popular, which worked out for since I was already wearing worn out jeans, tshirts, and flannel shirts due to living in a rural area. Not sure if trends catching up with me counts as being part of the fad, but I did like the music.
Wearing super preppy clothes to school/college. I was mistaken for a teacher in 11th grade. In college, I once wore a pencil skirt, black tights, white sweater, and high heels... to a regular Tuesday afternoon class, just because I wanted to.
I don't usually go along with trends, so my worst one is the starbucks planner thing where you collect stickers for every coffee you buy and you get a planner notebook for the coming year. Most expensive notebook I ever bought, and a waste of money. Also feels disgusting giving all that money to starbucks. This was like15 years ago though.
I did one of those Hey girls, did you know that um memes (and continued to make them) back in the day. Netted me niche internet micro celebrity status. I won't tell you which one, though.
I dunno how much I'm about to date myself with this one but I still remember the heartbreak when my favorite squid shaped silly band snapped after I'd used it enough, whoever designed those was either a complete idiot for designing something that breakable for children, or a maniacal genius for designing something that would need to be replaced that often for children.
Either way, child targeted advertising should be completely illegal, that's just hitting the parents with emotional blackmail.
Remember those silly rubber "Armstrong" wristbands? I had a million different ones and wore about 20 on each wrist to school and everywhere else. Yeah, I was pretty goddamn cool. 😎
When I was younger I fell for two - baggy jeans and llamas.
I remember in 5th grade I tried to joke about llamas with one kid and show him the llama song (because he loved llamas) and he said I was just copying him. In hindsight fuck you Hans, you didn't invent llamas, you were just copying others too, you tool!
I wore baggy jeans and oversized hoodies in the early 2000's. That's pretty much the last time I "followed a trend" that I can think of though there probably are other occasions too that just don't come to mind now. Most of the time I get into things either before they were cool or way after the wave has already passed.