I present for your consideration Jörg Sprave. Mr. Sprave has constructed a slingshot that launches machetes.
I don’t know what kind of person looks at a machete and thinks to themselves “…I must propel this at high rates of speed across a vast distance,” but I applaud them. At least Jörg admits openly that there is no practical reason for this to exist. Not that it matters — this thing is glorious.