I suppose it would depend on just what those 'future uses' might be! *grins*

I suspect they'd be for completely bizarre and random purposes like for use as currency on a planet where they take any patterned paper as money, with its value determined by how much the recipient likes the pattern or some such.

I dunno about Ten II - surely he'd have the same behavior as Ten? *ponders*

I was thinking of it as one of those 'inherited from Donna' things.