After looking around to create my own personalized blindfold I discovered it's not an easy thing to find.
I had to search for "sleeping mask" instead.
So, I discovered that artscow.com can create them.
I made a 1200x600 px image (jpg or png) of my avatar (should have transparent background):
and uploaded it to the site.
Since I only used one color (I guess), I paid $3.50 and in around 2 weeks I got it.
You can see its quality in the following video:
I was surprised by the great quality of the product and thought it would be something relevant enough that was worth sharing with you guys.