hi get the little cages from an on line specialist houseplant nursery, they do 12cm pot and holder and 17cm pot and holder but only in uk, maybe you can get them where you are.
I only started my collection this year my friend gave me a catologue she received i was hooked I bought lot of streptacarpus flower houseplants and they all died, must have spent a fortune on them over watered them gave them to much feed and not enough love
i bought some moreaugust when they had a lucky dip end, of the season sale
got them dirt cheap and only water them once a week success
my favorites are still begonias cane and rex janet