The Reddit No Spilling Mug Holder
thingiverse
Added: First Print Picture This thing prints out better than I thought, although you might need a hammer to assemble the 2 parts, but I'm pretty happy cause I don't need to glue it. From the Reddit Post, Haven't printed yet but looks good to me. Should fit 80mm diameter mug, resize to yours if needed, then split the parts to print the arm side ways. Or if preferred, printed in one.
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