Sly type heading off for stand (5)
I believe the answer is:
easel
'for stand' is the definition.
(stand for an artist's canvas)
'sly type heading off' is the wordplay.
'sly type' becomes 'weasel' (I've seen this before).
'heading off' means to remove the first letter.
'weasel' with its initial letter taken off is 'EASEL'.
(Other definitions for easel that I've seen before include "Support for artist's canvas" , "Artist's equipment" , "Painting support" , "Lease (anag)" , "Artist's tripod" .)