Recycle plastic trays and gallon Ziploc bags to make a mini-greenhouse for rooting plants. These are especially good when using damp sphagnum moss for rooting as it tends to dry out quickly. I rinse the trays and and bags and keep a supply on hand. You can write the contents on the bag with magic marker so you won't have to guess what you're rooting. Monitoring your greenhouse is simple with the clear bags.