You don't want umbrella plants because the sap in the leaf stems and the stock of the plant is very poisonous.
I like Zebra Plants which have some nice color, stay fairly small and are easy to grow.
Aphelandra squarrosa - Wikipedia, the free encyclopedia

Some versions of Cryptanthus work great too. I have some in a dart tank that started at 4 inch height plants and 1 1/2 years later are about 9 inches high, have nice broad leaf and are simple to grow.
Cryptanthus - Wikipedia, the free encyclopedia