You can now head over to the Funko-Shop where you can grab a limited edition Holiday Lil' Gruesome as well as hats, t-shirts and pins. The Lil' Gruesome only has a run of 500 so you will want to be quick! ($14.99, limit of 1 per customer. There's currently no international shipping options available.)
Funko have also stated a new exclusive item will be added every Wednesday, so be sure to check back regularly!