Plastic cups can help you start this summer’s vegetable or flower garden indoors. Fill each cup about half way with potting soil, water well, and plant your seeds. Once seedlings appear, begin “hardening off” the plants by moving the cups outside to the patio or deck for a period of time every day. Gradually increase the amount of time they spend outdoors. When the plants are ready to stay outside overnight, invert a small clear plastic cup over the seedlings to turn each cup into a mini greenhouse.