Quick poll: small purchases that changed my mind [v5]

This came up at a meetup recently and the room was split, so curious what the broader community thinks. Not sure if this is the right place to ask, mods please remove if it is not. Not sure if this is the right place to ask, mods please remove if it is not.

Quick context: I am relatively new to this and trying to find my footing. Been thinking about this for a while and curious what the community thinks.