Bean (the haricot/new world varieties) and pea leaves can be eaten, but you are probably best to use only the very young leaves; they get tough fast. the srouting tips of both can be used in salads, and the young tendrils of pea vines are also used in salad or a cooked veggie.

The flowers of any of the cucumber/squash/melon/watermelon family are edible; they are sometimes stuffed or battered and fried.

Carrot tops, turnip/swedes/rutabega; leaves can all be used - again, go for the tender shoots.

Just about any part of broccoli/cauliflower can be eaten - but stems will probably be best peeled; older leaves get tough.