Meditation on a rainy day with the kids, running around a local toy store:
A chess set featuring berserkers as knights versus Mall Madness ("Updated for the 21st century and redesigned to reinforce the important skills of shopping sprees, discounts and clearances")? Hurry up and invent that time machine, please!
(Illustration is of the stunning little works of art known as the Lewis Chessmen, c.1150, discovered in the Outer Hebrides where they were hidden under mysterious circumstances. Vikings played chess? Maybe I should have mentioned that in my letter to Capital One).