>>118785I use pic related, an MSR insulated mug. It's a great shape and size for cramming into a pack and your drink stays hotter for longer on cold mornings. Sure, it's not some beautiful anodized Royal blue suited for the mega rich but it's a really thought out and useful design.
Fancy cups are just so impractical for packing. I can always spot the people on the trail who have fancy cups in their packs.