Ok but I love this for a lot of reasons:
1. Excellent pun
2. Wasn’t snow white kept in a glass coffin while she slept? Very vintage fairy tale aesthetic.
3. A few people pointed out in the tags that a full-sized glass coffin would be a terrific terrarium for lots of the already spooky critters you keep in terrariums- tarantula, toads, snakes, carnivorous plants etc. And the coffin shape would give them lots of space and take the spookiness to maximum.