A great source of one on one is, as they say, to read to a child for 20 minutes a day. Find a series of books that your child enjoys, nestle down in a comfortable easy chair, just the two of you, and read the story aloud. If there are pictures, enjoy talking about the pictures. You may find that your 20 minutes of one on one will turn into a half hour or more.
The art thing is also a great idea, although you may need to buy a new side by side refrigerator on which to post all those priceless objects D'art.
(Of course, Pepper can help you at Lowes with that new purchase.
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