Across
2 this animal says quack
5 cook in this
6 you have 5 of these on each hand
8 what you do with food
Down
1 this takes children to school
3 open this to go in a room
4 this grows on your head
7 this is part of your body that you use to see
Yeah. That's the one.
Thank goodness you didn't put 'What people do with cigars' as a clue. :-)