Combine tuberous begonias with these petite, delicate semi-shade plants in a large container for an impressive exhibit:

Impatiens
Vinca vine
Lobelia
Gypsophila
‘Diamond Frost’ euphorbia
Coleus
Moneywort
Lamium
Maidenhair and other ferns
Any other semi-shade plants that are low-growing, petite, and delicate.