Have you ever gazed longingly at the ball pits in Ikea and wished that you were wildly frolicking in there, instead of having an argument about Billy bookcases? Join the club. Well we've got great news – there’s a big ol’ ball pit for grown-ups right here in Tokyo now, and you can get involved. Modelled on London's 'Jump In' and the recent 'Beach' exhibition in Washington DC, the local version is called Tamapa and will be set up inside an Akasaka club every month throughout spring. DJs spin tunes while you bounce around, and there's also a lounge area for catching your breath in between sessions.