What to use to cover up furniture in the rain?

Large plastic blue tarp http://wonkette.com/wp-content/uploads/2008/09/4-valleygarage.jpg

Plastic and many rocks as weights. Have a large skirt around the base of the sofa.

The tarps I’m finding are almost $100. Not my idea of cheap. And the plastic we have isn’t large enough to cover the couch in one piece. We’d have to tape it, but I’m not sure even that would work. I’d think it would fall apart in the rain/wind.

Call local furniture stores and ask if they have left over sofa/couch wrappings.
Brand new,expensive sofas come wrapped in a heavy giant bag.
If you can find a left over wrapping for an extra large couch,with tape and some ingenuitive you could rigged it protect yours from the rain.

Tape the plastic. Have two friends with open umbrellas sit on the sofa. Drive slowly. It is only 15 miles.

You could try a plastic slipcover with some weights.

Similar to what @Fly suggested, you can go to uhaul and get sofa cover

I have used these and the mattress covers to move before and they worked good.

How about a large bedsheet or blanket?

Tarps only cost $10 Go to Big Lots or Harbor Freight They are made in Viet Nam.

Also tarps go for under $20 in a home improvement store.

Go with a tarp. They are re-usable, easy to fold, have holes along the edges where you can tie bungee cords from one end to another. It’s pretty much what you’re in need of. Tape is cheap.

If you have a Harbor Freight store close you can get those poly tarps pretty cheap as well as a piece of poly rope to tie them on with. Or maybe a Big Lots store. Whoops ! Someone already did this, but he’s right.