Turn old newspaper into seedling pots. They can be planted directly into the ground as the paper will eventually biodegrade. You can form them by wrapping the paper around a jam jar or similar, or there are 'devices' that can be bought to make the pots.
Growing fresh herbs in your kitchen. Great idea fill Mason jar with water use wine bottle cut off bottom run string down neck of wine bottle to wick water. Takes a few days before wicking kicks in. Great for herbs in the kitchen window.
50L Large Capacity Potato Grow Planter PE Container Bag Pouch Tomato Window Garden
Save your large egg shells next time and plant with seeds. Once plants are large enough, just transfer the whole egg into the ground. The shell is actually a great fertilizer and the roots will be able to break right through.
Milk Jug Seed Starters: This simple technique was developed for seeds that need to spend a winter outside before they will germinate, but it’s also a great method to start garden seeds in late winter if you don’t have indoor lights or a cold frame.