Walter Hsiao published his citrus reamer in January 2013 – and it’s in the Top-10-Lists of Thingiverse ever since.

The reamer can be used for juicing oranges, lemons, limes, etc. There are two versions included: a solid version and a hollow one with internal ribs. You can download it at Thingiverse for self printing.

“Walter” – as the acronym goes – also designed a customizable bag clip and an interesting lens cap case with a magnetic lock you might want to take a look at.