Continue Point

Continue Points are items found in the Game Boy game Donkey Kong Land. As their name implies, they are checkpoints found at least one in every level of the game. They replaced the Star Barrels from Donkey Kong Country. They appear to be mirrors that have stars shining on them, and once touched, they turn around and a thumbs-upped hand appears on them, meaning that the level was successfully saved at that point.

Donkey Kong Land bio
"These sparkling circles indicate a continue point. If you make it to one of these, this is where you will continue the current level should you lose a life before you reach the end."