The OneWeb satellite has been described to be about the size of a beer refrigerator. That may be hard for some to visualize in the above graphic, so here is a beer refrigerator sold on Amazon.
The SpaceX Starlink satellite is reported to be 1.1 meters (39in) long and 0.7 meters (28in) wide and 0.7 meters (28in) tall. The beer refrigerator above is 37.5 x 26.4 x 21.2 inches a bit smaller than a Starlink bird, but it gives you a sense of the size.
So, we can say these LEO Sats are about the size of a large beer cooler.