I keep some in my Tarot box with my stored cards, some are on my alter, some are on the windowsill where I have my Tarot cards that are "out" and one is in my pocket, at all times when I'm awake. If I'm wearing something that doesn't have pockets, then it's pinned to my clothing. I also wear a rose quartz crystal on a chain around my neck. I don't sleep with any under my pillow, however. It never occured to me to do that, although I do sleep with cards under my pillow frequently, and always when I'm away from home.