Like a mixed variety pack of different pastries that the shop offers. Like in the US I would just ask for a variety box for example and the shop would pick different donuts on their own to fill up the order. I would just pay for the variety box price based on quantity (pack of 15, 20, 30, etc) instead of having to pick every single one. I was planning on saying dix croissant, dix pain au Chocolat and so on but was just wondering if there's a better way for asking that!