I know some godparents who:
-take their gc out to a posh London hotel for tea every year or attend some special event annually just with them (Wimbledon, race meeting etc etc)
-buy their god-daughter one or two real pearls every year to make a necklace by the time they are 21,
(but the above, although lovely, can be a bit £££)
-another gp I know has made it his mission to take his gc around every major London art gallery
-others do everything they can to support their gc (again, tends to be when gc older) with their special interests/projects ie relieve parent of that 500 mile round trip to a drama workshop or meet half the cost of a series of tennis/piano lessons etc
Teaching gc to drive is always a good one!!
My godmother used to take me on an annual train trip to Lincoln cathedral and I would love it because it was something we shared exclusively which made it special. Each year we would get off the train, walk up the cobbled hill past the same old antique shops and visit the cathedral, have an ice cream and come back! Doesn't sound much but it was magical somehow!
Love the laying down of wine/champagne idea!!