Bjørn Johansen

This is a WordPressified version of the excellent, lightweight (for real!) imageLightbox.js (MIT-licensed) by Osvaldas Valutis (http://osvaldas.info/image-lightbox-responsive-touch-friendly)
This is his introduction to the lightbox: 
“As for the image lightboxes, I have always lacked simplicity for them. I mean not only the visual design, but the overall experience: from implementation to UX. All due respect, but I have never liked any of these light-fancy-face-boxes. They all were solving problems that just don’t exist: lots of unwanted features by default, total mess in markup, no native behavior for touch screens. I was working on a project and needed an image lightbox that solves these problems. I needed a lightbox only for images, not video, text, and iframes at once. I made ImageLightbox.js.”
This version autodetects all links to image files and opens them in the lightbox.
For your “install, activate and go”-convenience, this plugin comes with a minimal CSS that easily can be deactivated and/or replaced.
The plugin can also be themed to your liking. An example theme is available here: https://github.com/bjornjohansen/imagelightbox-theme-smooth
Please let me know if you have any issues. Fastest way to get a response is by Twitter: https://twitter.com/bjornjohansen

imageLightbox

Image Lightbox, Responsive and Touch‑friendly.

Felix Arntz

This plugin adds a subtle snow fall effect to your website, using the lightweight <code><snow-fall></code> JavaScript web component by <a href="https://www.zachleat.com" rel="nofollow ugc">Zach Leatherman</a>.
<ul>
<li><a href="https://www.zachleat.com/web/snow-fall" rel="nofollow ugc">Learn more about the <code><snow-fall></code> component</a></li>
<li><a href="https://zachleat.github.io/snow-fall/demo.html" rel="nofollow ugc">Demo of the <code><snow-fall></code> component</a></li>
</ul>
The plugin takes a no-frills, zero-config approach – you simply activate the plugin, and it just works – thanks to the excellent underlying web component implementation. There should be no notable adverse effects on performance, also given the plugin uses the <a href="https://make.wordpress.org/core/2024/03/04/script-modules-in-6-5/" rel="nofollow ugc">WordPress Script Modules API</a> that was introduced in WordPress 6.5.
The plugin respects user preferences for reduced motion, as a best practice for accessibility.
Additional credit: <a href="https://unsplash.com/photos/snow-field-and-green-pine-trees-during-daytime-IWenq-4JHqo" rel="nofollow ugc">Banner image by Adam Chang</a>
<h4>License</h4>
The Snow Fall plugin is <a href="https://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">licensed under the GPLv2 (or later)</a>.
The <code><snow-fall></code> and <code><is-land></code> web components are <a href="https://opensource.org/license/mit" rel="nofollow ugc">licensed under the MIT license</a>.
See their source code on GitHub:
<ul>
<li><a href="https://github.com/zachleat/snow-fall" rel="nofollow ugc"><code>zachleat/snow-fall</code></a></li>
<li><a href="https://github.com/11ty/is-land" rel="nofollow ugc"><code>11ty/is-land</code></a></li>
</ul>

Snow Fall

Adds a subtle snow fall effect to your website, using a lightweight web component.

imageLightbox vs Snow Fall