@futurebird I've had several ant-mimic spiders crawl across my outdoor standing desk. They're very cute but only moderately convincing to my human senses. But then again, I'm not the target audience.
Last week I also saw a large syrphid fly (possibly _Spilomyia longicornis_?) that was holding its front pair legs out forward from its body and waggling them. That pair of legs had a yellow-to-black gradient, making for pretty convincing antennae! But of course the eyes were a dead giveaway.