There are a lot of fresh vegetables suitable for this stir fry that travel really well (2 or 3 days) and are surprisingly light. Green beans, snow peas, spring onions, baby carrots, celery, asparagus, baby leeks, diced red peppers are all fairly robust and give you some good fresh options. Make sure they are garden fresh, wash them well and dry them off thoroughly before packing them into a plastic bag.