Liquid marbles made from hexagonal plates can be moulded into different letters and shapes, and could be used as miniature reactors
Source:
https://www.newscientist.com/article/2208715-armoured-liquid-droplets-make-mini-disco-balls-letters-and-shapes/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home