This is a display stand I created for the wonderful Ghostface mask by gogo3D. It has tabs at the ends of the “t-bar” that fit into the elastic band slots of the mask and hold it fairly secure. You can get this terrific mask project here:

Scary Movie Mask - Free 3D Print Model - MakerWorld

I used this awesome mesh model by 3Design to fill in the eyes/nose/mouth om the mask while still retaining visibility:

Mask/Mosquito/Speaker Mesh - Free 3D Print Model - MakerWorld

This might be too tall for the A1 mini (the mask is quite tall), but you could add an addition cut and joint on the vertical beam like I did to separate the T-bar for inversion and minimal supports.