Making your own raised garden beds can be a cost-effective solution! You can use materials like untreated wood pallets, cinder blocks, or even old bricks to create the structure. If you have access to wooden planks, you can construct simple frames with just a few tools. As for soil, you can often find bagged soil on sale at local garden centers, or consider mixing compost with affordable topsoil for a budget-friendly option. Happy gardening!