Toggle Switch

A checkmark is drawn stroke by stroke inside the box when it is ticked.

Add a "Checkbox Check Draw" animation (also called an animated checkbox or checkmark draw) to [where].
When the box is ticked it should fill with color and the checkmark should draw itself in one quick, smooth stroke; unticking erases it the same way.
Keep it a real checkbox with its checked state, working with the keyboard and a visible focus ring.

An underline or pill glides from the old tab to the newly selected tab.

Add a "Tab Indicator Slide" (also called a sliding underline or active tab indicator) to [where].
When a new tab is selected, the underline should glide from the old tab to the new one, quick and smoothly decelerating, stretching to the new tab's width if it differs.
Keep proper tab semantics with arrow-key navigation, and move the indicator without sliding for users who prefer reduced motion.

An eye icon switches between open and slashed as the password text is shown or hidden.

Add a "Password Reveal Toggle" (also called show/hide password or an eye icon toggle) to [where].
Pressing the eye should quickly wipe away its slash as the hidden dots crossfade into the real characters, and pressing again draws the slash back and hides them: smooth and quick, with no bounce.
Keep the field width steady so the text does not jump, and make the toggle a real button whose label says whether the password is shown.

The product image shrinks and flies along an arc into the cart icon.

Add an "Add to Cart Fly" animation (also called fly to cart or add-to-cart animation) to [where].
When the add button is pressed, a small copy of the product image should shrink as it flies along a smooth, quick arc into the cart icon, and the cart should give a small bump as its count updates.
Play it once per press without moving the original product card, and skip the flight for users who prefer reduced motion while still updating the cart.

Colorful paper pieces burst out and fall to celebrate a success.

Add a "Confetti" celebration (also called a confetti burst) to [where].
Small colorful paper pieces should burst quickly out of the button, then tumble and drift down as they fade away, in a short, lively shower.
Fire it once per success rather than looping, keep it from blocking clicks on the page, and skip it for users who prefer reduced motion.