Trophy base or stand with a hexagon base shape and a rectangular slot to insert any sculpture, figure or model with names, occasions or any other thing.
The front has two designated a bit larger flat and slightly angled surfaces for ranks, names or other text or logos. The winter trophy example gives an impression.
The slot measures 28 x 7 mm with a depth of about 9 - 23 mm.
To provide an example, a modified version of the Abstract Snowflake was added as the top part that also has some content on the front surfaces of the base.
Print the snowflake top twice, glue both parts together back-to-back and insert the snowflake into the slot. The tolerance is on the loose end to avoid issues with a gap of about 0.5 mm all around.
The author hasn't provided the model origin yet.