DesignSystemOption2.kt

// somewhere in the theming code
data class Dimensions(
    val tiny: Dp = 4.dp,
    val mediocre: Dp = 16.dp,
    val craaaazy: Dp = 100.dp
)

val LocalDimensions = staticCompositionLocalOf { Dimensions() }

val MaterialTheme.dimensions
    @Composable
    @ReadOnlyComposable
    get() = LocalDimensions.current

// somewhere at top level of your UI hierarchy
CompositionLocalProvider(LocalDimensions provides Dimensions()) {
    MaterialTheme(
        colors = colors,
        typography = Typography,
        shapes = Shapes,
        content = content
    )
}

// somewhere in the layouts
Surface(modifier = Modifier.padding(MaterialTheme.dimensions.craaaazy)) {

}