I have one of these that I use when changing strings. Can't recall when I got it but it was probably 25 or so years ago. Definitely after I purchased my Baretta.
Changing the strings isn't too bad for me. I don't playing a Floyd equipped guitar as my main one anyway. Though it is dive-only, I find this tool very helpful with getting to the string lock allen screws on the back. Once they are changed, remove the block, stretch them out, tune up, stretch, tune. Rinse and repeat until they are stable, lock the nut, fine tune if necessary.
https://www.shredneckstore.com/SearchResults.asp?Cat=46