Ah, in terms of nootropics, piracetam is the landmark, it's quite useful as a mental focuser, with it I find my word recall and multitasking abilities are notably increased, and my mental stamina is higher, but it does not have any physically stimulating effects. There are a variety of analogues of piracetam too. Some of them are also physically stimulating. I use sunifiram sometimes, it has the nootropic effects as well as a light stimulation. Hydergine is my favorite nootropic, it's related to LSD in that it's an ergoloid (ergoloid mesylates, it's actually a blend of several ergoloids). It has a wide range of positive effects, it's quite nootropic and it also seems very balancing on the emotions. Albert Hofmann (the inventor of LSD) took it regularly and he lived to be 102 years old, and was very mentally there his whole life, still giving speeches and such at 100. I used to take hydergine for a while, and it really helped me through a difficult period of depression and anxiety. it's pretty expensive though, and can be a pain to get your hands on. Noopept (a nootropic peptide) is also quite good.
I like to occasionally do runs of nootropics, I used to take them all the time but I find they're best when taken for maybe a month every day, and then given a break.
Phenibut is something I use regularly, it's not really a nootropic but it's pretty amazing, when I dose it right I feel like I'm having the best day, I feel inspired, positive, glowing really, and it produces an interesting relaxed stimulation. It's one of my favorite substances. However it's more of a drug than the nootropics are, and is also physically addictive if you do it too often. At the moment I'm doing it every other day, it helps me to get into the zone for playing music especially. I have a slight amount of dependence on it, it's pretty easy to taper down at this level by skipping a day, dealing with a bit of anxiety, and then doing every third day, then every fourth, etc. Probably about time for me to reduce my use because I don't like the feeling of dependence, but it's just so damn useful...
Yerba mate and guayusa contain caffeine but in a MUCH gentler way than coffee, honestly coffee is about the roughest possible form of caffeine. Mate and guayusa contain a whole bunch of vitamins and minerals too, they're good tonics.