I've seen a number of different species of Draco in the wild in southeast Asia, but my understanding was that they were very difficult to keep alive in captivity because they feed exclusively on particular species of tree ants.
With regards to mixed exhibits, Singapore Zoo has a large walk-through aviary called the Fragile Forest which has butterflies in with flying foxes, sloths, tree kangaroos, ruffed and ring-tailed lemurs, mouse deer, and various bird species.
