u/Spotlesspinata

Hi everyone! My dad knows I love Sanrio and Hello Kitty, and he found these (there's two of them) in a charity shop last week. He bought them for me. I've no idea what they are, though! They're a small, sturdy, heavy-ish plastic container with a mirror lid on top. I feel they could be part of a cosmetic set, but searching online has come up with nothing. I found notebooks from 1999 in a similar blue angel style, so I think they are legit. Possibly even part of a stationary set? I'd love it if anyone had an ID for these or even ideas of what range they may be from. Thanks!