All-in-ones

I don’t have many baking tin in my cupboards because I like all-in-one ones. A bit like the interchangeable circular needles that can be used for knitting in the round, flat knitting, putting on hold, provisionnal cast-on, can be disassembled and reassembled as needed, and some have little holes for threading a life-line through. Handy all-in-ones, aren’t they?