Asklemmy

A "Bullet" style Fisher Space Pen.

People need pens more often than you'd think and you can be their hero. They're nigh indestructible in a bag or pocket and the thick ink will write on many things a normal ballpoint pen can't. I've written on ceramic, glass, wet cardboard, and one time (in the 90's) high school cafeteria roast beef.

The only downside is that if you damage the tiny ball in the ballpoint pentip and then don't use the pen again for a while, the sticky ink can ooze out and make a mess inside the lid.

A plunger. Get it before you need it.

Pocket knife/multitool.

A good pocket knife or multi-tool like a Letherman or Gerber. I always have a pocket knife on me and a multi-tool in my car. Either one gets used pretty much daily.

Knife: https://www.amazon.com/CIVIVI-Praxis-Flipper-Stonewashed-9Cr18MoV/dp/B08PF6NHLJ (there is a mini version of this if you like/need a smaller knife)

Multitool: https://www.amazon.com/Gerber-22-01471-Suspension-Multi-Plier/dp/B07DD69QN3/ref=sr_1_3?crid=L2L8RHSX7WGG&keywords=gerber%2Bsuspension%2Bmultitool&qid=1691155854&s=home-garden&sprefix=gerber%2Bsus%2Cgarden%2C84&sr=1-3&th=1

A shoe horn

A set of spectacle screwdrivers

A backscratcher

An ice cream scoop

If you already have a good pedestrian vehicle: a good bike lock.

I (and lockpicking lawyer) recommend the kryptonite evolution. Good balance of price and protection.

For a step up I recommend the kryptonite fahgettaboutit.

Either way, bolt cutters aren't getting in, and portable angle grinders will take a little while because the chain is annoying to grind.

I see too many expensive bikes chained up with thin little locks.

If you have a car: a fast charger for your phone.

It's amazing to me how many use a built-in USB that barely charges the thing.

A water flosser

It's made me way more likely to floss and it's so satisfying to do after eating any sort of food that gets stuck in your teeth

I thought this was the dumbest thing until I had one. Now I have one in every toilet.

https://www.amazon.com/16-Color-Activated-Detection-Birthday-Gadgets/dp/B07L2Y84K3

An air fryer, my microwave has been gathering dust ever since.

Decent digital instant read cooking thermometer. Makes any meat dish on point.

A dildo.

My dad would say a cast iron pan. That would outlive you and your kids.

I would say maybe an air fryer, I think you could get a decent one for less than $100USD. I use mine every day.

Otherwise, maybe good waterproof boots. I got some decent ones at an outlet store. They are kind of dressy so nice enough for work, but also warm AF and during the winter they are so good.

Maybe specific, but if you do any DIY housework, get an endocscope. Baiscally, a 10 foot long flexible wire with a camera and light at the end. Uses your phone as a screen. Can be had for <$50. So many of my house projects would have been impossible without it. Also good for finding stuff under the couch.

Ergonomic Mouse/keyboard

Admittedly for $100 you might have to choose one or the other (though I used a $12 ergonomic mouse from Amazon for years until I switched to a trackball, and I loved it) - but if your job is computer based, you really should consider switching to ergonomic equipment.

Your average keyboard and mouse setup is absolute murder on the wrists in the long run - if you spend more than a couple hours at the computer every day without ergonomic equipment and your wrists don't hurt, then it's only a matter of time.

Granted, it's not just about buying a cool new keyboard and mouse - you also need to cut out bad habits like wresting your wrist on the table while typing and so on, but a good KBM will help you build those habits naturall