I was going to recommend Phrag besseae, but apparently its kind of pricey, and can be a bit large. So, I'll try and get the ball rolling by suggesting some smaller plants
Ceratostylis philippinensis, $18.00 at Andy's Orchids,
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Leptotes bicolor, $24.00 at Andy's
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Edit: Removing Neo falcata, as it was previously used.
Inserting:
Seidenfadenia (Aerides) mitrata, $26, Andy's
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Sophronitis acuensis or cernua, both at Andy's
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