Item Morph Add-on 1.21+/1.20+

Now you can literally get lost among the surroundings. Transform into one of the familiar items and disguise yourself among the blocks. Item Morph is a mod that gives you the ability to change shape into one of 29 items. All items for transformation are crafted in survival mode and are compatible with Minecraft mechanics.

A total of 29 different items will appear: you can transform into a Dripstone, Amethyst, Poppy, Sapling, and much more.