I looked for a box to hold Molodos's “Spirograph Drawing Template”
[https://makerworld.com/en/models/469006-spirograph-drawing-template?from=search#profileId-378266](https://makerworld.com/en/models/469006-spirograph-drawing-template?from=search#profileId-378266)

Found MatikKutik's “Low-Profile Silica Gel Box – No Top Layers!”, stretched it, added top and bottom layers and a logo.
[https://makerworld.com/en/models/1754868-low-profile-silica-gel-box-no-top-layers?from=search#profileId-1866070](https://makerworld.com/en/models/1754868-low-profile-silica-gel-box-no-top-layers?from=search#profileId-1866070)

Works great.