
Continuity mistake: Hodgins goes from holding the jewellery found in the fish tank with one hand to two hands. (00:34:50)

Continuity mistake: The blood drips on the glass in front of Bones near the end has 2 distinctive lines of blood. In the following shots the blood pattern is different. (00:27:20)

Continuity mistake: Hodgins takes the lid off the fish blender twice when trying to find out what killed the fish. (00:32:00)
Answer: Answering my own question here but, having contacted various people involved in the production of Bones including Kathy Reichs, Hart Hanson, Eric Milligan, and Deirdre Lovegood who portrayed Taffet onscreen I finally have the answer. No-one know how she did it due to her constantly working alone. And she never revealed this information before her death.
Ssiscool ★