Wishing everyone a gezunte zummer (though in Eretz Yisrael now the weather is wintry). Given that on Pesach much emphasis is placed on people's mesorah, be it gebrokts or many other things, I was happy to find sources for two minhagim which many I know mocked as I insisted - there is no such thing as a minhag shetus if a large portion of Klal Yisrael follows it:
1) On motzaei Yom Tov rishon, someone in the shul (the gabbai was not at that minyan) wished to remind everyone of the changes in the Shemone Esrei, "klopped" four times - one for morid hatal (I know in chutz la'aretz this is not said, but the same would apply for omitting morid hagashem), one for ata chonantanu, one of vesein bracha and one for yaale veyavo.
Given that I am still not sure why people do not make announcements, given that Shulchan Aruch and any poskim I have seen say it is permitted (though, yes given that it is widespread to do so there must be a posek who rules that announcing would be a hefsek, so I will not mock it), I decided to focus on vesein bracha and announce that (I figured the others were more obvious and given that I am not a gabbai I did not wish to overstep my bounds).
I then went over to the guy who "klopped" and showed him that it seems to be permitted to make announcements and told him that Yekkes even have a minhag of announcing "yaale veyavo" on the first night of Rosh Chodesh and "Rosh Chodesh" on the second night. Of course he cynically laughed making fun of Yekkes and their minhagim, and lo and behold - it is explicitly written in the Maharil HIlchos Rosh Chodesh. The Maharil as many of you know is the source of many minhagim cited by the Rema.
2) The minhag in many communities in Eretz Yisrael is that on Yom Tov, during Birkas Kohanim, the Kohanim sing while the tzibbur says the tefilla for the dreams - only once, at "shalom". I never understood why not to do it three times at "veyishmerecha, vichuneka, and shalom" as is done in chutz la'aretz and as is brought down in the Rema, Mishna Berurah, and anywhere else I saw. I was never able to find a source for doing it only once.
The American cynics I have spoken to will tell you that there is really no reason to do it in Eretz Yisrael when duchening every day and they are doing it on Yom Tov for nostalgic reasons and it is a form of compromise.
Well, I found quoted a Kaf Hachaim in the name of the Arizal that it should only be done once. Given that many minhagei Eretz Yisrael are kabbalistically based, this fits in nicely.
Bottom line - there is a source for everything, especially that which is so widespread.
This truly enhanced my simchas Yom Tov.