Pop up Floating Rain Gauge
As it rains, the bottom of the base will fill with water and the tube will float on top, pushing it higher and higher showing how much it's rained.
Outside Holder : Printed With 6 Walls and 15% Infill to avoid leaking
Inside Floater: VERY IMPORTANT: Zero Infill, This inside slider needs to float on the water, so it needs to be hollow and light. The hollow 'tube' is designed this way to shed water to the sides.
Stake: Any printing settings will do.
UPDATE- I modified the floater to be lighter, it is now 13.5g vs the old style at 22g