I love my six plants I got last year in B&Q. When i bought them they where very week and I wasn't sure they will survive, but they all did. Plants bring beauty indoors but they need our care. So it was time to replant my two biggest plants into bigger pots. Instead of getting them from the shop I recycled old baby powdered milk tins. Plant containers can be made of just about anything that will hold dirt and water. You can use most common materials: plastic, concrete, pottery, metal. Don't forget that whatever you use will need drainage holes in the bottom. Best way to do that is using a hammer and nails to poke drain holes in the bottom of each can.
And here you can find my other Metal Tin Makeover.