Scavenger hunts. Especially for the 5 y-o. Don't be too picky; say something like "Find me something that is red, and round, and that you can eat!" Whether he brings you a tomato or an apple, accept it and lay on the praise. The better he gets at, the more specific you can be. So instead of just red and round, maybe say you want something red, round and sweet.
Play I-spy. Let the kid spy. This is a great way to get your kids looking at their surroundings and coming out of themselves to be more aware of what's going on in their world, it translates really well to later in life. (It also helps your brain. ;)
Get some kid friendly board games, an art that's unfortunately dying in the video-game era, these games are great for helping youngsters understand rules, taking turns, and can be a great time-killer for both you and them.
Disney movies of course! If you're cooking and the kids don't want to help, put them somewhere in your line of vision and put on a classic. Be it Lion King, Bambi, Balto... Land Before Time, if you can get your hands on it. All kid friendly, good entertainment and can lead right into nap-time or meal time.
Get them outside for a little while and encourage them to run around, or be active - maybe try playing scavenger hunts or I-spy out there. Don't do anything that encourages them running off out of your line of vision. Hide-N-Seek is an inside game with kids this young, because habits can be easily formed and they can run away from you in a snap if they really want to. At the age of distraction disease and learning what the rules are, you want to encourage being around their assigned adult more so than the opposite.
Have them help with chores. If they make a mess, suggest they help clean it up. If their toys are all over the place, suggest they pick them up. Keep them included in cleaning and picking up after themselves because it can translate into their life later on.
The path is different for you and me, but the journey begins in the heart.