With 32 sq ft. you don't need much. A shovel, rake, and maybe a weed puller. You can buy all sorts of fancy stuff but if you go to a few garage sales you will be able to find the fancy stuff in almost new condition plus the shovel and rake which will be well worn. Pay attention to the soil more than the tools. Without good soil and nutrition, you won't need tools because you won't have much of a crop.