And 18650 powered flashlight, such as one made by Fenix. (Also note they make a keychain flashlight which could stand in for the device in another toplevel comment.) The 18650 is more your standard flashlight though. I used to have a flashlight, who doesn't? But now I consistently take one when hiking, looking for stuff, etc. The brightness and even cast of the beam, plus the long battery life, mean it has a lot of utility for working at night or in a poorly lit space. You can use it as a lantern, too, just stand it up or hang it. Bonus points for USBC charging.
An insulated mug. I didn't think it would change the way I drink tea. Now I can bring it to my desk and take small sips. This helps me get back to work and stay focused, and probably reduces my overall consumption because I don't feel like I have to chug while warm and then go brew more.
An insulated mug. I didn't think it would change the way I drink tea. Now I can bring it to my desk and take small sips. This helps me get back to work and stay focused, and probably reduces my overall consumption because I don't feel like I have to chug while warm and then go brew more.