So, drifting along, as I do, I came across the work of the artist Kate Groobey, and her show Pure Pleasure, and just loved it. Kate is Great! That would make for a lovely t-shirt.
Kate paints, she dances, she makes music to dance to and way more besides. Buy her work and make her a bigger star would be my advice.
If you are unwilling or unable to do that, at least here's a link to the interview I did with her for outsideleft.