Is it random when he'll ask? I read somewhere that in order for him to ask to build the museum shop, I have to have donated at least 40 different things to the museum and at least one of each of the four kinds of exhibits. I just needed to donate an art piece and I should've been asked to build the museum shop. However, since I've reset, my little sister has been doing all the donating for me because I'm not that interested in catching fish and bugs anymore. Soon enough, we got to 40, and Blathers isn't saying anything. Should I have donated 40 species instead in order for it to work? What happened?