I think adding anything 'chocolate' even if it is a fabric basket would be welcomed by all quilters! Chocolate soothes the quilters soul I always say.
My suggestions: Chocolate (can be Dove, Hershey's Bliss, Hersheys Hugs and Kisses,) variety of coffee and tea packets, hot cocoa, etc.
If they choc is individually wrapped they can be sprinkled around on top of the other items ... tempting everyone else to see what else is hiding in the basket.