Perfectly melding hints of geometric, psychedelic and trompe l'oeil influences, the striking Wallpaper O from JiB Design Studio might be one of our favourite designs ever. It's just one of the offerings from London-based Korean designer Je-Uk Kim, who you'll find in this year's Designersblock Department Store. Available in Yellow and Grey (our cup runneth over!), JiB Design Studio wallpapers are eco-friendly and PEFC / FSC certified. What's not to love?