Collocations for wallpaper - noun

faded, peeling
floral, flowery, patterned, striped
flock (BrE), flocked (AmE), textured
aural (figurative)
Ambient music is really just aural wallpaper.

desktop (computing)
You can download desktop wallpaper.

roll
six rolls of wallpaper

hang
be covered with, be hung with
strip, strip off

peel off

paste