I have a small issue. The previous owners blew out a small chunk of cinder block around the basement where they put their electrical outlets (hey, beats me). So I have 5 of these holes I need to patch. Anyone have any ideas with how they might go about patching this? I was just gonna throw some scrap wood in there and then go over it with some quick-crete or masonary morter. It doesnt need to look nice. Anyone do something similar?