Java Edition:Floating Lever

This article is a work in progress. 

Please help in the creation of this article by expanding or improving it.
To do: Expand update suppression, update skipping, and vanishing blocks section, add bug reference if possible, find other ways to obtain

There are several methods to obtain floating levers in Minecraft, including April Fools' vote rules, Update Suppression, Vanishing Blocks, and Update Skipping.

Obtaining

14w25b Upside Down Floating Levers

In 14w25b (1.8 snapshot), any levers that are placed on certain blocks (that are not adjacent to other blocks) would float above the block in its upside-down block state due to a bug. The blocks that this occurs with are half-slabs, upside-down stairs, hoppers, and redstone blocks.

23w13a_or_b less_interaction_updates Vote Rule

Warning: April Fools' 

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In april fools' snapshot 23w13a_or_b, you can obtain a floating lever with the less_interaction_updates vote rule. First, vote for the less_interaction_updates rule. Then, place a lever on any block. After that, simply break the support block below the lever. This will result in the lever floating due to the suppression of interactions between blocks.

Update Suppression

Main page: Java Edition:Update Suppression

You can also obtain a floating lever through Update Suppression, yet this method is much more complicated.

Vanishing Blocks

Main page: Java Edition:Vanishing Blocks

An additional way to obtain a floating lever is with vanishing blocks. Simply perform vanishing blocks so the support block below the lever disappears. This will result in the lever floating.

Update Skipping

Main page: Java Edition:Update Skipping

Furthermore, you can obtain a floating lever with update skipping.