I printed the pallet coasters from a design uploaded to Thingiverse by madizmo (https://www.thingiverse.com/thing:3985834) and wanted to create something simple to hold them when not in use.  From that need, I came up with this.  The arms are pretty solid and don't flex much in any direction.  This is tall enough to hold four pallet coasters.

It is important to note that I printed the pallet coaster model at 80% and to get everything to fit good, I had to print this model at 103.5%.  The dimensions of this model is 86mm x 86mm x 57mm.

Printer settings:

• Layer height:  0.2mm
• Wall line count:  4
• Wall order:  inside to outside
• Top/bottom layer count:  4
• Enabling Ironing:  yes
• Infill density:  10%