Out of order somehow. 

The weird shaped one with the trumpety white flower is an Angraecum distichum, about half an inch across.

The dark purple orchid with the dangling leaves and babboon-face-shaped flowers is a Lepanthes Gargoyla, leaves one inch across at the widest point. 

The two orchids stuck together with the yellow flower are Haraella odonata, the flower is half an inch tall. 

The plant in the first pic with the striped flower is a Dendrobium lichenastrum, and its leaves are about an inch long, at most.

And last but not least, the cluster with the greenish pronged blooms that you have to look closely for is Bulbophyllum alagense large form, and its leaves are about three fourths of an inch tall, not counting the bulbs.

cool-critters:

Mount d´Ambre leaf chameleon (Brookesia tuberculata)

The Mount d’Ambre leaf chameleon is a diminutive chameleon from far northern Madagascar. This species inhabits rainforest and during the day it is active in the leaf litter or on small branches a few centimetres above the ground. At
night it can be found roosting on branches approximately 5 – 15 cm above
the ground. It is considered ’Vulnerable’ by the IUCN red list.

photo credits: ovguide