Every year I try to have the girls make something for Nick for Father's Day. I usually start by asking, "What do you think Dad would like? What things does he like?" The first year I asked this they responded with "Tissues"so he got an fancy embellished pink kleenex holder. Another year they responded with "Zombies" so we made him an ugly zombie doll.
This year they responded with, "Well- Dad does drink alot of water in his office." They would know. They are always in there sneaking a sip. Based on that we made him a set of homemade coasters.