The three host bodies removed the com devices to stop being tracked easily in the turbo lift. The three were shown without the devices and the devices were shown on the floor of the turbo lift. In 10-forward, all three are wearing com devices again. Correction: The three are seen collecting the com badges of everyone else in 10-forward, and they each put one of these on themselves.
When Data's uses his hands to angrily strike his console, the console should break due to his immense strength, but it doesn't even crack. However, 24th century materials will presumably be a lot tougher than glass or perspex (Plexiglass). It may even be transparent aluminum, which is strong enough to make tanks for humpback whales.
After Data's console is shut off on the Bridge, he pounds the panel in anger. Some of the makeup from Brent Spiner's hand can be seen rubbed off on the computer panel after he hits it with his fist.
The "stunned" Ensign Ro deliberately and carefully chooses a position to "fall" into.
Riker doesn't seem to be too affected by his "broken arm".
When the three entities leave the bodies to enter the swarm, they somehow seem to move through the force field.
At the end, Data apologizes to Worf for how he treated him while being possessed by the aliens, yet never does so with Picard. Earlier, Data lifted Picard up by his neck with one hand, an action that had to have been quite painful.