I make a few different broccoli salads. Here's my version of one I had for the first time at a big potluck dinner. Not having the recipe, I just wrote down what all I thought was in it and went from there. I don't eat a lot of meat, so I like to "beef up" all sorts of dishes with various beans, nuts and seeds.
It's great for a picnic because it's good at any temperature, though I'm always careful to not leave anything at room temperature for too long. And it travels well; I use a glass bowl with a plastic lid.