CapibaraZero: A cheap alternative to FlipperZero based on ESP32-S3
capibarazero.com
capibarazero.com
Really a pitty, love my flipper. :-)
I have not tried yet, so cannot vouche for the quality.
BTW their factory firmware isn't complete, it's just for testing purpose.
Here's what it looks like, the assembly, and a broader overview than the OP linked website. Young project so the information is a bit scattered.
BadUSB can store portable scripts in an easily executable fashion.
Backup universal IR for when you lose the TV remote, or volume control at your local sports bar (this will turn heads, even though tv-b-gone have been around forever)
These are the most useful things I’ve actually done with it.