Museums are getting in on the act too. For example, they've got kids being curators (they're the clever people who work in museums who know all about the paintings and other objects etc).
At the Corinium Museum in Gloucestershire, local primary pupils from St Lawrences School are even doing their own labels for objects in the museum's collection.
And secondary school pupil, Rhiannon Smith, is being the press officer at Cotswold District Council and is on site at the Corinium Museum talking to journalists about what's happening on Takeover Day - wow!
At the V&A museum in London, Takeover Day kids are organising a Digital Festival for teenagers full of their own ideas for how to use the latest technology at the museum.