Craft appearing in what is our home (5)
I believe the answer is:
earth
'our home' is the definition.
(home of all humanity)
'craft appearing in what' is the wordplay.
'craft' becomes 'art' (both can mean cunning or trickery).
'appearing in' means one lot of letters goes inside another.
'what' becomes 'eh' (sound used to ask 'what?' or 'pardon?').
'art' inserted into 'eh' is 'EARTH'.
'is' acts as a link.
(Other definitions for earth that I've seen before include "Dirty hole" , "Human world" , "Land" , "Fox's or badger's lair" , "Fox's burrow" .)