Are you planning on buying any of the upcoming 20th merchandise?
I'm planning on either buying a new 3DS with imported plates from the new 20th anniversary 3DS in the US and Japan (if you can get them separately anywhere). If not I'll be buying a Blue 2DS instead.
I'm also planning on getting some 20th merch but not sure what I'll get just yet, mainly because I don't know what will be available in the UK, having said that I really want to buy something to celebrate the anniversary.
Wouldn't mind getting one of the t-shirts or cap though.