The key is to keep it cosy and natural while still defining the lips with a bit of definition. A lip gloss with a slightly tinted, warm undertone works perfectly for a more casual, laid-back vibe, ...
Then there’s @makeitwithmicah who posted a clip of herself decorating a Stanley for her daughter with charms, a cute lid cover and a pouch big enough to hold lip gloss, a brush and a compact mirror.