Looks Blocks, Scratch Wiki

Looks Blocks are blocks that allow you to edit the way your sprite looks. It can also change costumes for your sprite and make your sprite say something. This is an important block if you want your project to be with buttons. You can make your sprite say something by dragging the "Say () for () seconds" to your desired spot, then change the "Say >()< for () seconds" to the message you want. And if you want, change the "Say () for >()< seconds" to change how many seconds the message will appear.

Sound Blocks, Scratch Wiki

All Scratch April Fool's Day Easter Eggs

Scratch 2.0 - Programming 101

Most Useless Block? - Discuss Scratch

Petlja

Eng:Data Blocks - Test-Scratch-Wiki

Looks Blocks [Beginners Tutorial] Scratch Programming

Video Game Making, 7+ – Signals

Snap!: A More Powerful Scratch – beanz Magazine

Development of Scratch 3.0 - Scratch Wiki

Block Categories (1.4) - Scratch Wiki

Romantic Return to the Medieval & Recursion Math Return to Self

Glitched blocks, Scratch Wiki

Scratch Wiki formatting in Firefox - Discuss Scratch

Addons - Scratch Addons