I work with 3 day custodians and 3 night custoidans. In the past, I have
gotten each group a $30 gift certificate to the local pizza place and 2 bottles
of soda - then I wrote a little note for them to "have dinner/lunch on me."
This year, I am going to get them all 2 single serving bottles of soda, a
pack of microwave popcorn and a $5 gift card to the video store. I think that
this is a good general gift if you don't know the person really well. :)