Large ita bag recommendations

Hello, everyone. I apologize in advance if I misspell anything at all, as I'm half asleep and about to head off to bed; but I was just wondering if anyone has found a VERY large ita bag. I don't like backpacks, but those are the only ones I've been finding that are quite large. Specifically, I need a big enough one to fit a 20x11x30 cm plushie in. Not in the pin display section, just in the bag itself. I also still need to have enough room for essentials after the plushie is put inside. I also really want a large enough display window for all my pins, also preferably a loop part for keychains if that makes sense. Thank you very much for whoever replies, I've looked everywhere