I followed some simple instructions on how to make a hologram on my phone. I followed one of these videos I put up a video here : https://www.youtube.com/watch?v=aaYBUsCpSvQ I used standard 2mm perspex from my local art shop. The dimensions of each triangle leave a 1cm squared hole at the bottom – which means it’s more suited to a larger display, like an iPad. You can make this smaller, but the likelihood of it free standing is less. If you