we use these ....
PCL Media ltd® Dual Double Sided Pink ID Card Holder and Matching Lanyard with Safety Breakaway and Metal Clip - (Pink) Double Sided ID Card Holder Landscape or Portrait : Amazon.co.uk: Stationery & Office Supplies
I can't even make a purchase ... the ADD TO CART button is greyed out whenever I try to select any excursions and packages, Had the same problem last year - website is dreadful as are wait-times when you call. Poor show indeed