I break them up after they’ve been in my studio for a while. I have both purchased precuts and homemade precuts that I cut from my scrap bins. When I first get the commercial ones, whether they’re jelly rolls, charm packs, layer cakes or FQ bundles I like to keep them packaged up so I can take them out and drool over them. The drool/petting period can last from a few months to a few years (if they’re really luscious), but then I dig in. It’s rare for me to only use the fabrics from a single collection in a quilt, so I have no qualms about separating them by color or value and storing them mixed in with other precuts once I’m over the initial infatuation.
Rob