To cram and scramble items from your personal reality (i.e. dishes into your dishwasher, stuffing socks and other things under your bed so your mom can't see, or hoarding for some folks)
I just jambled my dishwasher.
My dishwasher is jambled as hell.
My sister's room is more jambled than a stuffed Christmasturkey. (she would be known as a jambler).