We got a couple 8X10 synthetic fiber indoor/outdoor "rugs" from Lowes a few years back for about $15/each. Super lightweight, dry almost immediately and seem to shed dirt & sand easily - at least, we're not taking it in the trailer.
As they are very lightweight, you have to spike down the corners or put weights on them to keep the rug from blowing away. Our rugs are grey - have seen them in brown and green. They fold up nicely & compactly so that when we're packing up, I store them both in a small plastic bin with the stakes, awning lights and wheel chocks in the back of the truck.
Bill & Kim
34’ Classic Limited w/slideout (Anabelle)
Chevy Silverado * 2500HD Duramax * LTZ
WBCCI 7005 * AIR 9218
The trouble with trouble is it always starts out as fun...