I put the crappie in a bowl, add a little water, then fill the bowl with ice....but it is really personal preference...any of the other posted options will work fine for a day or so...the key is to keep them refrigerated...I add mostly ice with a little water(a cup) because ice has more stored BTU's (latent BTU's) than just water without ice so the crappie are maintained at a better/more consistent temperature and thus will deteriorate more slowly(last longer)...Addtionally, when I catch crappie, I put them in an ice chest (with ice in it) instead of a livewell...especially when the lake water turns lukewarm or warmer...Love those Yetis...but used the best quality Igloos prior to yetis. Hope this information helps..
I do exactly what he said.
Plus, I add a screen to the ice chest to prevent the crappie from sitting in water (melted ice) all day and getting slimy.
Not sure where I got the white support and then fashioned some metal screen cloth to fit snug so the don't slide down around.