How To Make a DIY Grill Cover. Cold weather is right around the corner and that means the grill will be getting a lot less use. If, like me, you don't have any place other than the balcony to store the grill over the winter months why not make a DIY cover for it? Oilcloth, which is available in an impressive array of patterns and colors, will make a cute little hideaway for your grill while it's not in use. And with this how-to, you'll have it together in no time!