if you're a coffee head- koffee mameya for elite beans/tasting experience
tonkatsu maisen aoyama - I think about this tonkatsu often
yoyogi park - great for people watching + general chilling
kushiwakamaru - yakitori spot, there might be a wait but it will be worth it
kappabashi street - packed with restaurant supply stores/places to get really nice knives, or just cute reasonably priced culinary souvenirs e.g. sake sets
higashiya ginza - recommend trying a set course here if you're interested in japanese traditional sweets/tea
galerie dentsdelion - amazing antique store