The Hanna Mug is designed by Hanna Werning and inspired by Swedish nature. It is available in a choice of six main colours (black, blue, green, pink, yellow and the newly added brown). Regardless of which colour you chose, the colours and pattern give the mugs a retro look.
As they don’t have a handle they probably aren’t that suitable for the usual use, namely holding a hot beverage, but they are shown in a variety of other different uses (plant pot, toothbrush holder, ice cream sundae bowl) so I’m sure you could find a place for them in your home.
They cost £7,73 each from the Scandinavian Design Center.