Is there a simple way to handle overflow in a column? I'd like to make a navigation rail that displays three dots at the bottom when it can't fit all of the items.

I think

canScrollForward

is what you’re looking for https://developer.android.com/reference/kotlin/androidx/compose/foundation/lazy/package-summary#LazyColumn(androidx.compose.ui.Modifier,androidx.compose.foundation.lazy.LazyListState,androidx.compose.foundation.layout.PaddingValues,kotlin.Boolean,androidx.compose.foundation.layout.Arrangement.Vertical,androidx.compose.ui.Alignment.Horizontal,androidx.compose.foundation.gestures.FlingBehavior,kotlin.Boolean,kotlin.Function1)

No, I was looking to clip the contents and provide an overflow menu.