The only thing you need to win the end of the world, A TRUSTY TOTE BAG!
• 100% polyester
• 15″ × 15″
• Maximum weight limit: 44lbs
• Dual handles made from 100% natural cotton bull denim
• Handle length: 26″, width 1″
I crammed this thing with groceries, a laptop, and two water bottles and it held up fine at around 30 pounds. The 15x15 size is roomier than it looks, fits a full week of library books. Cotton handles don't dig into my shoulder either.
The cotton denim handles are way sturdier than I expected and don't dig into my shoulder even when the bag's loaded up. Fits my laptop, gym clothes, and groceries all at once without a single stitch complaining.
I hauled two gallons of paint and a bag of potting soil in this thing and the cotton denim handles didn't dig into my hands at all. The 44lb limit is no joke, it held everything without the bottom sagging.