Small net pots inverted can also be used. I haven't found the small ones here but have found some large diameter open-structured plastic hair rollers that work just fine ... nice little spikes on the outside that grip the moss as you wind it round.
Heather, I got ... ounami seikai, suikaden, shikoden, shisen furan, kohou, koukakuden, tamakongo, and shirayuki ...
... which join ... isechabo, seikai, hisui, benisuzume, awaharibeni, shutennou and the standard white furan in my little neo patch.
As you can see haven't gone much into variegated types ... yet ... so far just flower color and growth style.
Cheers,
Tim