I've been experimenting with some techniques to make "tabula scalata" Lego that
forms different images when viewed at different angles. Here's a couple of
videos:
(...) That's pretty cool. There has been some work in this area in the past, at least one mosaic at Brickworld did this, several years in a row now. (4 years ago, 26-Jan-21, to lugnet.announce.moc)
