With this information in mind, if the block is not copyable, you can go into the dev app to make them copyable, create a custom page of all the favorite blocks, and link it somewhere in your navigation where appropriate to give the users one place to manage them.

I did something like this with all the "Manage" blocks, creating something akin to a HUB for users to easily manage all their site content from one location.

@Wise

See, that is stuff that should be documented! @LoneTreeLeaf thank you! Copyable field. I've been wondering how to get certain blocks to custom places. One click.

Thank you.

Yep yep, you would just navigate as you would under the "Pages" section within the Dev application, locate the block that you cannot find when trying to add a new block like normal, click into said block and way down at the bottom within the pop-up form is a box you would tick to make them copyable, thus adding them to the add block menu.

Hidden, not really spoken of, just something I stumbled upon ages ago.