Mushroom

In the Mario universe, the Mushroom is perhaps the most iconic item of all. It even leaks outside of the Mario series to make an appearance in Wreck-it Ralph, despite Mario himself being absent from the movie.

Super Mario Bros.
The first game that the magic mushroom is found in, it has no eyes here. However, the power is the very same: it allows Mario to take 2 hits.

Super Mario Bros.: The Lost Levels
Like many things in the lost levels, Mushrooms function identically to the original Super Mario Bros. However, the one main difference is in its design. It has visible eyes, one of the few bizarre features of Super Mario Bros.: The Lost Levels to have influenced Mario games, being literally every following Mario game including the Mushroom except Super Mario Land.