How to achieve placing content elements inside content elements?

Good day Typo3 community,

I would like to implement “nested content elements” in my Typo3 project, i.e. putting multiple different CEs inside the Tabs of a Tab menu.

I know that the extension Bootstrap Components (t3sbootstrap) provides such functionality, but I’m already using the Bootstrap Package by Benjamin Kott.

Are there any other extensions for Typo3 v11 that provide nested CEs, and if so, do they have pre-configured elements and/or backend rendering capabilites?

Thanks in advance!

Regards, Nefiji