Here's some bad news for you if you're over 30 and have unframed posters, IKEA furniture, a collection of shot glasses or anything else on this list in your home.

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  • Unframed prints and posters
  • Trophies on display
  • Pine furniture
  • Absolutely everything from Ikea
  • Unmade bed
  • Incomplete sets of dishes and cutlery
  • Shot glass collection
  • Inflatable furniture
  • Lava lamps
  • Kitschy picture frames
  • Mosquito net
  • Fake plants
  • Piles of unopened mail
  • CDs or DVDs on display
  • Anything under your bed
  • Dust
  • Beanbags
  • Anything covering a window that is not a curtain
  • Material over lamps
  • Glow in the dark stars