Here's the bulk of my collection housed on two 6 ft tall x 4 ft wide x 18" deep metal shelf racks. Each shelf has a twin tube T5 HO fixture over it.
Shelf #1
Top: female Vampire Crab / Black color phase Violin mantis / Vampire crab pair with their first brood of babies / Tan phase Violin Mantis. The tanks have mix of CPs, mosses, orchids & other tropicals
Middle: A. avicularia tarantula / CPs / all plant tank
Bottom: Neps / individual terrestrial Utric deathcubes / Orchidioides Utrics
Shelf #2
Arboreal insects / an expired tank drying out before I restart it / 40 gallon cube which is just housing some terrariums for young mantids and so on.
Middle shelf: 40 gallon breeder tank housing my large breeding colony of Geosesarma sp. "Red" Vampire Crabs and my N. ampullaria collection
Lower shelf: Succulents / storage tub of small ferns / storage tub of small aroids and other small terrarium plants. Things are grown out in here and then pruned to plant the display tanks where they will either establish or fail but I still have a backup.
In front of the window where it's a bit cooler I have a 20 gallon tank with mini orchids and my two HL Neps (N. jacquelinae & N. jamban). It's lit by side lighting from the two shelves & a 12" LED panel
This is the LED panel I got off ebay for $35 w/ free postage, it's not anything wonderful hi-tech I guess it works. These orchids are kinda low light plants who turn yellow in bright light so I'm getting away with it.