For eyeshadows (you'd have to add magnets to your pans, though)... https://www.starsmakeuphaven.com/product_info.php?products_id=629 For either/or... what about a Z-palette? Or just buy MAC's palettes (15-pan for e/s, 6-pan for blush)?
The MAC palettes aren't bad--particularly if you get a discount of any kind--but I find they are much more user friendly when the inside guide is pried out.