Knitters can make a variety of items for themselves and their families. The most common might be scarves. You can use a solid-colored Yarn or variegated yarn. Beginners might have more trouble with clothes like socks or hats, but those are also good items to make.
Some household items are good to make for beginners. Dishcloth patterns can be simple, and dishcloths are relatively fast to make. Blankets might be more difficult because they require more yarn, but they can look good in your family room.
Some advice that I have for you is to cast on loosely, so that you have a straighter edge.