My dad is mad keen about his tomatoes. He's already got a couple of Bit Tom planter sacks out in the garden. Has installed a horizontal bar above them to dangle strings from to give the tomatoes something to climb up. Although he got a good yield without them last year.
I bought a load of builders buckets, the type that the sheds normally knock out for less than a quid, drilled holes in the bottoms and filled with compost. Got loads of toms and garlic on the go at the moment.