The can before Sheena merely turned end over end, drifting towards the side f the gap and rebounding off it with a clunk as it hit the counter top - at least on Yukari's end. From the ninja's end, it simply seemed to go clunk off the somewhat immaterial edge of the hole it was floating in.

"It shouldn't be locked. That's the door we just came in from, isn't it?" mused Yukari. On the other hand, they hadn't exactly come in through that door, so maybe it had been overlaid when they came in and hadn't noticed.