For simplicity, I used 6" black stove pipe (round). Had a piece 16" long, duct taped the lnb centered onto the end and while it was sitting on my porch I got a signal. Note without the stove pipe I had a -16.5 dB snr and zero percent valid.
Update: after 15 minutes of it just stabilizing… -11.75 dB snr , 75% valid, 20178 bps data rate.
and green / green on status dashboard
I think a coffee or paint can could work just as well. Similar to the pringles idea, just more durable