Some brackets and cleats to hold Census Bureau issued phone and NOV pad, plus a pen and sunglasses... everything an Enumerator has to juggle out in the field.

Recommended hardware:

• 13x 1/8 in. pop rivets
• 2x M4 30 mm bolts
• 2x M4 nylock nuts
• 2x 0.8x6.0x8.0 mm torsion springs: https://www.amazon.com/gp/product/B07BP6YPWT/
• 2x M2 8 mm bolts

I'd strongly recommend printing the sunglasses clip and top phone piece perpendicular to the print bed for greatest strength. I also included some "washers" for these pieces to help spread out the load of the fastener and help avoid splitting those pieces.

The best way I could come up with to hold the springs under tension while assembling was to grip each end with a pin vise, though even this took a little finesse (see picture).

I designed it to work with some elastic I had on hand from making face masks, but I think you could probably get it to work with rubber bands as well.