5 model

Free

EU 3D Mysterybox Sample Spool. (ScaldaSpool™)

Thingiverse

Free

Mystery Box - 40 Stls

Thingiverse

Free

Mystery Pet Easter Edition (Mid-Print Blind Box)

Thingiverse

Free

Book Themed Kleenex Box (Mystery)

Thingiverse

Free

Super Mario Mystery Box

Thingiverse