Swiss Chard is a fabulous veggie SRS, and a great alternative to spinach like you say. Allotments are the place to get it if you happen to know anyone who grows it, or of course grow it oneself. Rainbow chard, being (unsurprisingly) a more colourful alternative to the silver stemmed Swiss is worth it for the bright stems in orange, yellow, white and red, as well as for use in the kitchen.

Today I cooked up a pan of Pepperonata (simple Italian vegetable stew of ..peppers - surprise -and a few tomatoes), using up a bunch of sweet peppers which were on the way to going soft. I didn't have any olive oil in though, and it really lacked that rich satisfying thing that vegetables slowly cooked in olive oil inevitably have. Still, OK on some pasta for tea, plus a sprinkling of olives and a hearty grating of hard cheese.