I did a few 1st of April posts in the past and remember Julian G4ILO (SK) was a master in fooling people on his blog. AE5X has a lot of humor as well...
A few of my own posts in the past:
https://pe4bas.blogspot.com/2011/04/long-delayed-echoes-again.html
https://pe4bas.blogspot.com/2013/04/stand-alone-spar.html
https://pe4bas.blogspot.com/2014/04/usb-serial-converters-remotely.html
https://pe4bas.blogspot.com/2015/04/fieldday-electrocution.html
https://pe4bas.blogspot.com/2016/04/pe4bas-lightwave-converter.html
Have fun reading!!!