If you live on low side of road - clean the road drains before any floods. At least check the drains if its an offence to clean them in your area. Labels from milk container to write details- time planted. Make lines like this , and cut to each apex cut out the labels. A little diagram to show the triangle wave in the middle for making labels.
Builders mesh for hot house, shade house and trellis.
Rotating compost bins from large used containers. Rotating Compost Bin made from a large dis-used container available at fodder stores. Compost bins out of pallet . These are available free from some factories. They make great picket fences for children's gardens.