Are you interested in kicking the can down the road and keeping the miles for a future redemption? It's pretty easy to get activity via various activities - the Shopping portal is one example. I would just buy a $25 Starbucks card via the portal on giftcards.com and call it a day (edit: JJeffrey has a better way). I have orphan miles/points in various programs, and occasionally I get some value out of them when I need a night at an airport hotel or a feeder flight that is bookable with an award.

Or, if you know someone who is more interested in AA miles, you could transfer them for $45 (AA seems to have reduced the transfer fees recently).