What is Reddit's opinion of COMLIFE Portable Hand Warmer, 20000mAh Electric Camping Long-Lasting Pocket Warmer & Reusable Larger Capacity Type-C Power Bank, Single/Dual-Sided Quick Heating, LED Display, Up to 14 Hours of Heat?

From 3.5 billion Reddit comments

Half gallon water bottle. Logistically, it's about how much water I need from the time I leave work/gym and wake up. I have a 20 gallon water tank, but it can be a pain to fill during the weekday and there's considerations during the winter. I always have a bottle with me, so upgrading the size has greatly simplified life.

USB rechargeable hand warmer are amazing when it gets cold. I'll turn it on to pre-heat my bed. In the morning, I toss it on my clothes to pre-warm them. I just leave it plugged in at work during the day and have plenty of heat during the night. I did my first winter in Denver (and thus ski towns during the weekend) without a heater by doing this; down to about -5 degrees.

Knife sharpening... I feel like people get super excited and buy nice stuff for their van kitchen or are determined to cook more, but don't have knives that are sharp enough to make food prep enjoyable.