If you really, really, really support a Kdrama actor you can actually hire a Food Truck - or Coffee Truck - to visit their work site. Although I haven't seen one in an actual Kdrama they are shown in promo photos. Apparently the trucks are decorated with large photos of your favorite person & all the cast and crew can visit the truck for coffee or snacks.
Google says it costs somewhere between $2,000 - $5,000. If it got you 'face time' with your favorite person maybe it's worth it?
This one from the Philippines but you get the idea...
Looks like Barbie designed the one in the photo.