To do with children
(without breaking the bank...)
Edo-Tokyo museum: http://www.edo-tokyo-museum.or.jp/en/
Legoland Discovery Center: https://tokyo.legolanddiscoverycenter.jp/en/
RiSuPia at Panasonic Showroom: https://www.panasonic.com/global/corporate/center/tokyo/risupia.html
Toyota Mega Web: http://www.megaweb.gr.jp/about/english.html
Kidzania: http://www.kidzania.jp/tokyo/en/
Fire Department museum: http://www.tfd.metro.tokyo.jp/eng/index.html
Real escape game: http://realescapegame.jp/
Tokyo Mystery Circus: https://mysterycircus.jp/en/
Museum of science & Innovation: http://www.miraikan.jst.go.jp/en/
Laser Trap: http://super-escape.co.jp/wp/
VR game center: https://vrzone-pic.com/en/
Sega Joypolis: http://tokyo-joypolis.com
Tokyo Dome: https://www.tokyo-dome.co.jp
Namco World: http://www.namco.co.jp
Railway museum: http://www.railway-museum.jp/en/index.html
Orbi: http://orbiearth.jp/
Poras Raoul ポラス ラウル