Netix, DH bought a black plastic soakwell from Bunnings. We use it for our spuds. Put in a layer of dirt to cover them, when they sprout, put in more, they sprout, we put in more dirt...etc., until they reach the top, flower and die off. Then we knock the soakwell over and harvest our potatoes. The good thing is that we can put it anywhere in the yard and doesn't look quite as daggy as a stack of tyres. I usually have it hidden.

With regards to "how many" of each plant. We had a seed fundraiser at childcare and the backs of the packets of each that I bought (except for the herbs) would give an idea of how many you should plant, for example, the capsicum said 1-2 plants would yield enough for an average family of four. Cucumbers was the same. Cant remember the others but the packets give you a guide.