Crisps for example ending in bin, bag sandwiches (5)
I believe the answer is:
snack
'crisps for example' is the definition.
(I know that potato chip is a type of snack)
'ending in bin bag sandwiches' is the wordplay.
'ending in' says to take the final letters.
'bag' becomes 'sack' (both can mean a container).
'sandwiches' indicates putting letters inside (to sandwich is to block something in).
The last letter of 'bin' is 'n'.
'n' inserted inside 'sack' is 'SNACK'.
(Other definitions for snack that I've seen before include "fast food" , "Elevenses?" , "Light bite" , "(Eat) a light meal" , "Quick bite to eat" .)