Sounds like a good idea: Start your tomato seeds like this then put the whole thing in the ground when you plant them, the tomatoes will thrive off the egg shells (calcium--helping prevent blossom rot)
Cedar A-frame Squash support. Good idea for squash, cucumber, melons and other vining crops. One pinned says: "Trellising vines increases air circulation to minimize disease problems. Keeps vines and fruits off soil for a cleaner, better harvest.
How To Make Self-watering Seed Starter Pots. We are excited to share with you this recycling project. It is truly green and fun. You do not only recycle those plastic water bottles, but also make self-watering seed starter pots for you to start your herb
OP: No-dig vegetable gardening technique. I have used this method for years. The entire website is amazing, give it a try! Unless of course, you like digging, rototilling and digging weeds all summer. :D