Amazing what you can do with a single sheet of acrylic and some self adhesive magnetic tape: Instructions: 1. You need some acrylic cut to size roughly 260 mm x 240 mm, I used a grey tint 9t20 I think it was but that's optional, also polished corners are important. 2. Buy some self adhesive magnetic tape, you can usually pick these up cheap from ebay/amazon. 3. Rest is self explanatory, simply stick the tape around the edges of the acrylic and enjoy.