These wavey textured letters match the wavey number set found here: https://social.thangs.com/m/305538

See here for video: https://youtu.be/05MeHJnXIxM

Other letter sets:

Geode Letters: https://thangs.com/mythangs/file/791222 Geode Numbers: https://thangs.com/mythangs/file/791233

Lichen Letters: https://social.thangs.com/m/172431 Lichen Numbers: https://social.thangs.com/m/177028

Wavey Letters: https://social.thangs.com/m/305534 Wavey Numbers: https://social.thangs.com/m/305538