Cheap upgrades that make daily driving nicer: protection, comfort, storage and a dash cam that punches above its price. Everything here is fitted to my own car. Suggest a product in the comments and once I test it, I will add it if it earns a spot.
Must have to protect your car from scratching it
Car Bumper Protector Strip
Best holder for your phone + universal
Car Phone Holder
Great for longer car rides so your hands don't sweat
Steering wheel cover
Best way to protect and customize key for your car
Leather Car Key Case Keys Full Cover
Great for comfort and breathability
Leather Safety Belt Shoulder Cover
Easy installation and great for bags if you have full car
Universal Car Hanging Bag Holder Storage
Based on Linus Tech Tips, best budget dash cam with great sensor
2k 60fps Car Dash Cam Super Night Vision
Protecting your rearview mirror from water and stains
Car Rearview Mirror Protective Film Waterproof Anti Fog
Great and cheap way to design enterior of your car
Universal Car Accessories Insert Trim Styling Interior Decor
Stops the shopping rolling around the boot on every corner. Folds flat when you do not need it.
Car Trunk Organizer
No more hunting for a working pump at the petrol station. Set the pressure and it stops on its own.
Portable Tire Inflator
Lives in the boot and doubles as a power bank. Beats waiting on a stranger with jumper cables.
NOCO Boost GB40 Jump Starter
Plugs into the 12V socket and gets into the seat rails. Cheaper than one trip to the car wash.
Handheld Car Vacuum
Saves the dashboard and the steering wheel in summer. Takes ten seconds to put up.
Foldable Windshield Sun Shade
Nothing falls into the black hole beside the seat any more. Silly cheap for how annoying that is.