Mattress
A mattress was a large, flat object used for sleeping. In some situations, it might be placed on top of a bed.

When the crew of  was forced to hide in the catwalk in 2152, they brought sleeping mats and mattresses with them. ()

In 2266, Harcourt Mudd located the missing Venus drug pills in his mattress. ()

Navigator Nancy Randolph lay on a mattress while ill at the Lactra VII zoo in 2269. ()

According to Miles O'Brien, Cardassian mattresses were uncomfortable. ()

In 2370, while undergoing treatments to adjust to Deep Space 9's gravity, Melora Pazlar complained to Doctor Julian Bashir that her mattress felt like rocks. ()

Prior to revealing her true gender that year,  told Quark she couldn't sleep on a lumpy mattress. ()

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Furniture
Sleep