What can I serve with burgers other than chips?

[Quooker]

We had chips yesterday, forgetting that I had planned to make burgers today. I plan to serve them in a bun, with salad but what else can I put with them other than chips

A packet of crisps on the side with a little dip

We don't use flabby burger buns, we use ciabatta or sourdough, they are pretty substantial.