I completely fail at doing something very basic:
I would like to select all objects in the middle of the drawing (my desired objects are multilayered smallish button design, which consists of about 10-12 objects.The whole drawing has probably 1000 objects at multiple layers.There are big objects serving as background, which I do not desire to select).
How can I select these small objects nicely?
What I have done:
Selected whole drawing, did Shift-Ctrl-G to ungroup all objects.
Now, I would click on Select and Transform objects button

What I can do, but which is very painful, is use Edit Paths by Nodes button

What easy method am I missing?

If there is way to use something like Free Select Tool (as in Gimp and other programs) it would be great, but even a square area selector would be perfectly fine.