An example lid assembly can include a lid and a slider. The lid can include a wall defining a recess. The slider can be configured to slide in the recess and can be configured to move between a closed position where the slider covers the opening to aid in preventing spilling of contents of the container and an opened position where the slider uncovers the opening such that the contents of the container can be consumed. The slider can be configured to be removable from the lid and can be replaced back on the lid. Additionally, the slider can be configured to lock into place on the recess in both the closed position and the opened position.