I go with buying whole plant, or grow-your-own. Stripping leaves off a growing plant means it keeps and is always fresh. I also have a lifetime's supply of chilli powder and dried chillies, but always seem to grow a plant each year, along with tomatoes, and the fruit bushes, rhubarb and strawberries in the garden just happen - especially the strawberries. If you want stuff other than leaves for salads, you can steam broccoli, break the florets up and then chill it - great mixed with cold crispy bacon bits and dry roasted pumpkin+sunflower+sesame seeds. I use nuts and seeds, along with dried fruit like papaya/pineapple mix which can all be surprisingly good in salads and keep well. Mixed bean salads are good too, and a quick'n'dirty method is to used tinned ones, drained and rinsed and mixed with spices or a salsa. If you have storage boxes, this will easily keep for a few days in the fridge, so you don't have to use it all at once.
