An inexpensive item for raised garden bed? Can't build myself

I've seen people use plastic kiddie pools.

I used to have a large garden - 30 ft rows, 3 ft wide. The soil was mounded up between the rows and I never had anything to contain the soil. I used pine needles (pine straw) between the rows on my walks. It really depends upon how high you want your raised beds. If you really need something to contain the soil, you can use rocks, take apart old pallets and use the boards, anything that's around to hold soil. Dig your row out and mix in compost with the soil - that'll work - The underlying issue is that people think they can get away with not preparing the soil under the raised bed - turning it over, removing weeds, etc. - just plunk a "raised bed" down and there will be no gardening problems and that's just not true.

I use old ice chests that no longer hold ice well. I just keep the drain plug out. I also fill the bottom with a layer of coarse gravel to help fill up the space and provide drainage. Not pretty, but it works well. Do not use the Styrofoam kind. For some reason they seem to kill plants.

So many choices: buckets, litter pails, hay bales, crates with landscaping fabric nailed to inside,...ensure there are holes for drainage!

My mom used old bricks or could use rocks to make her flower bed/ and to grow tomatoes made it the shape she wanted.....could not have a big garden where we use to live at....no room. Could go to the railroad station.....years ago we got railroad ties for free to line out our drive way.

i used old filing cabinets. Simply took the drawers out and laid it on its back so the holes where the drawers were is facing up. Filled the bottom with rock, weed, and random brush from the yard, then put a layer of mulch on top, and then put topsoil on the top. Planted my tomato plants and right now they are 4 feet above the filing cabinet and producing wonderfully tasting tomatoes.

An old bathtub