Select a group of blocks and wrap a container around them.
GenerateBlocks can already convert a select group of blocks to a Container block, but only if they are all core GenerateBlocks blocks.
With GB Hacks, you can select any group of blocks and conveniently wrap a container around those items.
You'll need to select two or more blocks in order for this option to appear. To wrap in a Container, click on the vertical ellipses symbol and find the option to "Wrap in Container."
Once done, the blocks you've selected should now be in a Container block.