collapsing like a string of pearls, and growing string of pearls - a 12 in flower chain

A flat pack flower hanger. The flower chain holds pots in a 5 to 8 foot tall vertical chain of loops which can collapse horizontally, so you can alternate between having a garden growing on your windowsill and having it grow along the side of your window while doing other things with the windowsill. And just generally speaking it is an interesting and space efficient way to incorporate plants into ones abode.