"Most Practical Mathematics and Science"

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>[At-home utility].
>[Important chemical derivations / availability].
>[Legal nootropics / supplements / drugs].
>[Lab equipment {especially, "basing on the plausibility of *very cheap* iterations"}].
>[What tubing is cheap and strong enough for liquid nitrogen {and similar}].
>[Useful gases {other air derivations being argon and oxygen}].
>[A homemade compressor].
>[Relevant metals].
>[Producing and utilizing graphene].

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>[Some aspects you're really interested in, on the most practical science and mathematics].