Looking for ideas: cabin airflow

[Nico1]

With the arrival of summer flying, I'm interested in improving air flow in the cabin in the 76F.  One thing I noticed is the overhead vent is quite useless (the little air scoop on top always looked like an afterthought in the design..) The other two vents are awesome, but positioned very poorly and do a great job keeping my legs cool.

I was wondering if anyone modified or manufactured any attachments for those leg vents to better direct the airflow? Looking for inspiration before testing things

[ArtVandelay]

I found directing the copilot side to the pilot side and vice versa maximizes the flow over your body, overheads I try to direct into my face.