Fill them with small halloween themed toys and some sweets.
For an extra spooky effect you can wrap the small toys in artificial stretchy cobweb and then place in each paper bag. Or perhaps sprinkle some halloween themed confetti for a great effect.
Scary witch hand shaped cello bags are ideal to fill with popcorn if you think the kid’s have had too many sweets.
To make up a lucky dip box simply have fun decorating a cardboard box and fill with small gifts for each child. Gifts can range from pocket money toys that fit in with the halloween theme or even small books and stationery items.