I went to an incense making class earlier this year for my birthday, itās super easy and makko powder is basically the ONLY thing you need to buy to make incense at home. Itās pretty cheap and lasts a while, you can get it on amazon.
All you need to make incense is equal parts makko powder, your dried+pulverized herbs/flowers/etc, and water (give or take on the water, use your intuition). And boom, you have incense ādoughā that you can now shape into cones, dry, and burn. Iāve been making incense with what I can find around me, natives and invasive plants. Itās awesome and I totally recommend it. Making incense makes me feel like the computer energy is leaving my body.
(pic is of the class incense set up)