It depends on how much respect you’re looking for, really. I mean, if you just want your friends, family and neighbours to respect you then it should be pretty easy.
From what I can see, your smaller primate groupings here on Earth tend to respect strength of character, kindness and consideration of others. So for starters, stop acting like a pretentious wanker, insufferable know-it-all, or complete douchebag. (People usually lose respect for individuals for one of those reasons.)
But if you’re looking for respect from a larger grouping of primitive hominids (that’s you, humans) — let’s say from the size of a corporation up to the size of a nation — this will require power too.
For my money, nothing says power like a phalanx of Über-Chimps decked out in gold spandex and helmets that look like the business end of a whale phallus. Oh, and they have to be toting plasma weapons too, or the look just doesn’t work. Unfortunately, all your backwards planet seems to think plasma is good for making televisions show crappy content in higher definition.
So, give your primitive technology I’d start building a thermonuclear weapon right now, and some kind of delivery system. (No one would expect a llama.)
My advice is to test it on a holiday weekend for maximum impact.
Next Time: I’ve read somewhere that time dilates near the event horizon of a black hole. Does that feel anything like my early morning Intro to Psychology class?