Ephemeral ladybug trace fossil

I just came across this image of a ladybug making tracks in condensation on a window. As far as I can tell, this is an original photo by user 77dlsd at reddit. Fascinating! This might be a decent way of capturing different kinds of arthropod trackways, although you may have to be something of a Snowflake Bentley to frost a glass plate, drop a critter, catch a critter, and photograph the plate without losing anything.