Ten-year-old Florence from Oxfordshire wants a cool hotel den so that she can relax, hang out with friends and be on holiday whenever she wants.
Doctor Who fan Adam wants a den where he can celebrate his favourite TV show and pursue his passion for drama.
Vilonu is a huge CBBC fan and dreams of becoming a TV presenter when she is older. She wants a space where she can write, film and edit her very own TV shows.
Gregor from Aberdeenshire needs somewhere to practise, store and maintain his bagpipes. He dreams of becoming a professional, but his pipes are too loud for the rest of the family.
Amayah from Sheffield is a huge fan of the weather and dreams of becoming a forecaster. She wants a den where she can study the weather and create her very own forecasts.
Ciarän from Barnsley is passionate about engineering and vacuum cleaners. He wants a den where he can create his own inventions, understand how things work and share his knowledge.
Twelve-year-old Annabell loves the seaside but lives in Milton Keynes, miles from the coast. She would like her very own beach den where she can spend time with friends and relax.
Stan from Cumbria is a talented artist and a huge fan of comics. However, he has nowhere to draw and needs a den to work on his illustrations and display his art.
Twelve-year-old Amelia from Glasgow has family ties to Australia, the USA, China and Hong Kong, and she wants a den where she can celebrate her diverse international heritage.
Ollie wants a lucky cat-themed den where he can relax, hang out with his favourite feline Graham and work on his very own comic stories.
Lydia from County Durham is passionate about the ancient Egyptians and wants an appropriately themed den where she can learn more about this fascinating period from the past.
Joe and Meryl take a look back at some of the amazing dens from past series and catch up with some of our Dengineers to see how the dens have changed their lives.
Joe and Meryl take a look back at some of the amazing dens from past series and catch up with some of our Dengineers to see how the dens have changed their lives.
Joe and Meryl take a look back at some of the fun moments and amazing dens from the series.