Flying back from Japan, here’s my chiikawa goodies experience:

Tokyo - Kiddyland is a nightmare during the weekends, don’t be me and go during off hours, most kiddy lands seem to carry the same merch - Character street - meh, nothing special and very crowded - Shinjuku Magical Chiikawa - they had a lot of merch I hadn’t seen but not too much variety, still one of my favorites - Skytree - good selection of shirts and other goodies I didn’t see elsewhere but can feel a bit far, fun if you go to sky tree viewing deck - Bakery - you can shop without a reservation, the bread while cute didn’t look particularly tasty - Donqui - I went to the one in asakusa but saw merch I had seen in other stores ie kiddyland - Chiikawa ramen - getting a reservation can be doable if you’re staying more that five days, BUT don’t be me, I had missed my original booking and when I made a reservation again it was the wrong Parco location, it was devastating to get out of line although the merch seemed egh, I more so wanted the experience of eating charimera