Random Riddle: The Spy Gift

There once was a family of spies. One of them is celebrating his birthday, and the Mommy spy gave him gifts. The celebrant did not say anything; instead he gave this set of words:

toes
heat
ambition
nose
kiss
see
for
oneupmanship
route
tough

And because the family are spies, the Mom understood the message.

What was the message?
 

Random Riddle: The Spy Gift