@Merember I have found a hand held loupe that is cheap and works really well for a quick no fuss check on the trichomes. It's a 10x21 so it gives a pretty decent field of view for it's size. Glass lens, six bucks, and enables easy view of trichomes.
10X 21mm Jewelers Jewelry Eye Loupe Optical Vision Reading Magnifying Glass Lens | eBay
10x 21mm Jewelers Loupe Magnifying Glass Lens. The 10x power loupe has a focal distance of 1" (26mm) with 21mm dia lens size. It include a small loop to attach to a neck chain or key chain. Good for identifying small marks on jewelry, watch making industry, specially for inspecting.
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