Mix up stuff bishop left in storage on vacation (8)
I believe the answer is:
scramble
'mix up' is the definition.
(I've seen this in another clue)
'stuff bishop left in storage on vacation' is the wordplay.
I cannot really see how this works, but
'stuff' could be 'cram' (cramming is a kind of stuffing) and 'cram' is located in the answer.
'bishop' could be 'b' (abbreviation for bishop in chess) and 'b' is located in the answer.
'left' could be 'l' (common abbreviation) and 'l' is found in the answer.
The remaining letters 'se' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for scramble that I've seen before include "Get along somehow" , "Stir eggs vigorously" , "motorcycle trial" , "Climb awkwardly -- move quickly" , "difficult climb" .)