True, everyone is different. When I started to add veggies, these were ok for me in small quantities and accompanied by other very digestible foods (rice, eggs, white bread, yogurt):
Zucchini- peeled, seeded, diced & well cooked.
white potatoes- no skin.
avocado - small amounts at a time
asparagus tips
clear strained homemade vegetable broth give me some of the vegetable benefits (and just pleasure of cutting them up) without the fiber. I made the mistake of thinking it's ok to blend the veggies: no such luck. Great soup, but my husband ate most of it .
Have been thinking hard about the need for a a J-pouch first year cookbook. If I ever get around to it I'll query this group for suggestions on what to include.