The most efficient version facilitated a cup attached on a screwing mechanism situated below a mesh on which a bee could stand and drink through once the cup is moved upwards sufficiently (2022).  
  Part of: Keller O, Appelhoff S, Paffhausen BH, Wenzel T (2023) Development and Sharing of Open Science Hardware: Lessons Learned from Wikimedia Fellowships. Research Ideas and Outcomes 9: e95174.