There's a wealth of options available for making my new trike visible - rear flashers, rear reflectors, flags, horns, front lights, side reflectors, etc.

Of the available options, which are prudent for daytime riding along less to moderately traveled roads? I'm more interested in maximum safety than minimum weight. My wife will freak when she sees the trike, thinking that, being so close to the road, I'm sure to be unseen by drivers and promptly squashed. I'd like to forestall her arguments by being "lighted up."

Your suggestions are appreciated. Thanks.