1. Glutenfree Shop Luciole
Pick up the breads and bakes, all gluten-free and vegan, from a small shop that leans on rice flour. Simple, honest baking near Meiji Jingu.
The owner is gluten-intolerant, and the whole shop is celiac-friendly, so nothing in the case is a gamble. The hours are tight, roughly Friday through Sunday afternoons, so check before you go. Easy to fold into a walk around Yoyogi or the shrine.