I miss the compact Apple wired aluminum USB keyboard, which was only available for a short time before they upgraded to wireless products (the 78-key A1242, launched March 2009, quickly discontinued December 2010 after the 3rd Apple Wireless Keyboard was released in October 2009). It only came with iMacs in early and mid-2009.
The LoFree 1970s looks pretty reasonable at $100. I'm not sure what its battery life is like - you can also connect with USB-C.