MyFishFinder.com Just like iceshanty but warmer
there's plenty of lakes with crappie and bluegill all over Idaho, but the F&G (for reasons beyond my knowledge) doesn't list species available in specific bodies of water, so finding lakes with panfish at all can be a bit of a chore. your first move should be to head to your local sporting goods store (cabelas is good, Sportsmans Warehouse tracks local fishing success based on angler reports) and ask about panfish. someone will know something, and will be more than willing to point you in the right direction. after that, it's all gonna be your own hard work and paying attention to the reports and conditions page for Idaho to find places with decent sized fish.since you're in Lewiston, i can't help you much as far as locations. all the fishing i've done in that area has been fly fishing the rivers in summer for trout. best i can do is tell you that if you don't mind driving a couple/few hours, Spirit lake and Fernan lake near Coeur d'Alane have bluegills, and Fernan lake has crappie as well. i didn't catch anything with any real size, and can't vouch for the quality of ice up there (i'm in southeast Idaho), but i also only fished each lake for only about a day each so there really wasn't much time to try for size.
There are anglers guides on the F&G website. The PDF links to each region have a breakdown of species and available facilities at each lake. https://idfg.idaho.gov/fishing/angler-guide-gem-state