Although I like it, not maple as it would be too hard to corral in space. I suppose jam would be my pick of the choices you gave, but sticking with the theme and going outside of those choices I would say my pick would be whipped honey. I love honey, but again it would be too runny as with the maple syrup. But, whipped honey would serve both purposes as it is spreadable and less runny so wouldn't have the syrup problem in zero gravity.