People can have tea on them (5)
I believe the answer is:
trays
'people can have tea on them' is the definition.
I can't tell whether this defines the answer.
'tea on them' is the wordplay.
'tea' becomes 't' (I've seen this in other clues).
'on' says to put letters next to each other (in a down clue, letters appear on others).
'them' becomes 'rays' (I can't justify this - if you can you should give a lot more credence to this answer).
't'+'rays'='TRAYS'
Can you help me to learn more?
(Other definitions for trays that I've seen before include "Shallow carriers" , "Salvers" .)