Charlene,
You've gotten some great responses. I agree that things to keep hands busy are great tools. My kids often did puzzles, lego, coloring or playmobile during read alouds. One thing that we did at the table during devotional or bible reading was to require the kids to come up with a question and its answer from the reading. They could ask any sibling or parent afterwards to answer the question. They quickly learned that they had to pay attention so they could answer any question, as well as be ready to ask more than one question as often someone would ask the question they had thought of first. We never used it during school read alouds, but I did often quiz them afterwards. It might be fun for your kids to see if they can come up with questions that will stump you. Ours especially liked it when they could come up with something that neither my husband or I could remember.
Layne