The dingbot in charge stared at her blankly for several moments, then a copter blade came out of the top of it and it flew up into the air, then headed for the drawer.

Yep. At least one of the dingbots can fly.

It pulled on the drawer. And pulled. And pulled.

And it is ultimately too small to open the drawer. The others made way, clearing a path so that Tasha could get to it.