Dont forget things like fans for circulation and extraction, temp/RH meters(multiple for micro environments) good yoyos for your light and i find that i use a shit load of zip ties for all kinds of shit. Also garden stakes are a great tool for learning lst. That and garden training wire( the green shit) i even use pipe cleaners because they are cheap and easy to use on plants. Get good measuring cups and spoons. And maybe a watering can or spray feeder, your preference.
Edit- also 10-60ml syringes, they are cheap when you buy them buy the 20 on amazon