![](https://static.wixstatic.com/media/c028a6_a548667658c94b30bdb46ed51392c3ca~mv2.png/v1/fill/w_100,h_75,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/c028a6_a548667658c94b30bdb46ed51392c3ca~mv2.png)
I think these mechanical portable greeting cards are so impressive – you move the tab around to open the ‘iris’, which looks just like the beginning of James Bond!
In the comments, someone has made a version with aluminium sheets which looks really cool too. Check out the instructable here.