if you don't care how they look, and aren't concerned about plastic, you can use all sorts of recycled containers... pickle buckets (or other 5 gallon buckets...just be sure they are from food and not something like kitty litter or laundry detergent) are great for things like tomatoes and peppers that need lots of root room. you can cut to top off from milk jugs or other gallon jugs or bottles (again, make sure they're from food) for stuff that requires less real estate.
you might also find inexpensive containers at yard sales or thrift stores.
if you're using recycled containers, make sure to add holes for drainage.
also, make sure you water a LOT once the weather gets hot. containers dry out a lot faster than plants in the ground.
good luck mama
