Can Any Bookshelf Speaker Be Used Nearfield?

I can highly recommend KEF LSX speakers for nearfield listening in a desktop application. The LSX are basically a mini version of the LS50 wireless speakers. They are active, powered speakers, with built in DAC and DSP.  All signals, including analog are processed in the digital domain (i.e. analog input goes through an adc (analog to digital conversion). It is very easy to use the KEF LSX control app to optimize the DSP parameters for desktop nearfield listening. I have both this system and my main rig up in Audiogon's Virtual Systems.  You can link to my desktop rig here:  https://systems.audiogon.com/systems/9168

Get something designed for nearfield you’ll get better sound at lower volume as well as ear bleeding volume. Neuman KH120 or Genelec 8030C are perfect for less than 2 meters. They have some basic EQ which will help with desk bounce and bass. 

Nearfield to me means limited bass but great Mids and uppers.
At a 2-5' distance.

Agreed?

Does that answer your question?

If you are asking for speaker suggestions, I would say the Rogers LS3/5a
$4.0 or you have the Gig Harbor Audio Bookshelves at $1.0. Below that it all a compromise.

The big problem here is using a desk for speaker stands.  Not only is that a reflective and vibrational nightmare but it also prevents you from moving the speakers around in the room for the best sound.  Use sturdy stands in front of the desk.  That way you can work with the room instead of accepting its problems. 

I have a few folks who are building nearfield desk systems that I am working with at the moment.  No, not all monitors make good near field monitors.  Any speaker where dispersion or reflections are required for image to come together are bad choices.  Raidho or Scansonic would be poor choices for a desktop application for this reason.  

You also want to account for your physical placement of the speaker.  If your desk is near wall, a rear ported monitor that needs lots of space behind is a poor choice.  Some work better than others with port bungs and you may be able to use/implement bass traps and other treatments to work around some of these issues. Secondarily, don't assume a front ported speaker or sealed speaker is automatically a solution.  

Finally, there are wonderful stands made for a desktop environment by IsoAcoustics.  They would be my first choice.  The key is getting the speaker up of the desk and getting that tweeter to ear level.