Related Clues:

• Use the Singer
• Kindergarten staple
• Tendency for one's mind to wander, for short
• Sticky stuff on envelopes
• Write a P.S.
• Arts and crafts purchase
• Assure, with "up"
• Make a Halloween costume, say
• Model-making need
• Obey the plus sign
• With 42-Down, extensions
• Ply needle and thread
• Include, as a dash of cinnamon
• Fix a hole, perhaps
• Work with numbers, in a way