Basically every container is now a “Can I reuse that?” container, lol! Yogurt cups (washed, obviously) are for starting cuttings in water. Coffee can lids are drainage saucers. The surprisingly sturdy potato salad containers from the grocery store just need drainage holes and then the lid can be the drainage tray. I have also spray painted some of the nursery pots that earlier plants came in to make them prettier on the windowsill or patio.