What wit might do with small camping equipment (8)

'what wit might' is the definition.
I can't tell whether this definition defines the answer.

'do with small camping equipment' is the wordplay.
I cannot quite understand how this works, but
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is found within the answer.
'equipment' could be 'roll' (roll is a kind of equipment) and 'roll' is present in the answer.
The remaining letters 'bed' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?