Recycle your old newspapers into plant pots for seedlings. When it's time, transfer them straight to the soil - they're biodegradable!!
Get your garden started early by planting your seeds in eggshells indoors before the weather permits outdoor growth. There are several reasons why eggshells are the perfect pot for this, but the biggest is that they are cheap (free really), full of calcium to give your seedlings that extra boost, and easy to plant in the garden when ready (the shell can stay on!).