i've thought about showering with her, but im really kinda scared to! im sure it sounds stupid, but i just have this terrible fear of dropping her, or something bad happening! haha. i think we'll try it once she wakes up from her nap...
I did baths with them, not showers, because I wanted to play in the tub and show them baths can be fun. We splashed, played with bath toys, and made a mess. I've taken a shower with one of them once and it wasn't an issue at all, but that was also when they were less squirmy.
That's what I would do. Have fun, be silly! Maybe some bubble bath would be a fun addition? Not every bath, since they can dry out skin. But I know my LO get like in a trance with the bubbles. He'll get some on his hands, and stare. Then splash them off and giggle insanely (but he's also a water baby, and would stay in the tub all day).
I also second the idea of trying a different time of day. When my little guy is over-tired, the things that usually make him roll over in laughter just make him angry.