For sure @magu.
Get your hands on a high quality hand loop 10x is a good choice and clip it over your cell phone’s camera lens. For best results use a tripod with an handheld shutter release to position the camera and avoid any movement.
Look, this isn’t @JoeCrowe or @LD50 quality, but the images will be plenty good enough to gauge how your trichomes are developing.
-Grouchy