Some pretty delightful (ab)use of ZWJ[0] to come up with unique new "characters":
* nail and gear flag [1]
* united federation of planets flag (star trek) [2]
* HAL 9000 [3]
[0] https://en.wikipedia.org/wiki/Zero-width_joiner
[1] https://openmoji.org/library/emoji-1F3F3-FE0F-200D-1F4CC-200...
[2] https://openmoji.org/library/emoji-1F3F3-FE0F-200D-1F7E6-200...
[3] https://openmoji.org/library/emoji-25C9-FE0F-200D-1F534-200D...