Something heavenly for me in bed (5)
I believe the answer is:
comet
'something heavenly' is the definition.
I can't judge whether this definition defines the answer.
'me in bed' is the wordplay.
'in' means one lot of letters goes inside another.
'bed' becomes 'cot' (cot is a kind of bed).
'me' going inside 'cot' is 'COMET'.
'for' is the link.
Can you help me to learn more?
(Other definitions for comet that I've seen before include "high-flier" , "Rudolph's companion" , "Heavenly visitor" , "Small orbiting body in the solar system" , "Tailed heavenly body" .)