Three years ago I got annoyed enough with not knowing which color dye came from which Paas egg-dye tablet to do something. That something was taking notes. Last year, I posted the results. So you could know which of the nearly-identical-looking tablets is which color. Also so the one tablet which had to be mixed with vinegar instead of water — unless that was the one that had to be mixed with water instead of vinegar — could be told from the rest.
Also two years ago when we dyed eggs we found they’d changed the formula and now they all need vinegar. Or they all don’t need vinegar. I forget which. But now you have to work at it to get that wrong. I just remember being annoyed that they double-crossed me like that. Still, I hope the pictures at the link above help you with your egg-dye plans.
And over on my mathematics blog I worked out how often Easter would happen on each day that it could happen. (This for the Western tradition, on the Gregorian calendar.) So if you’d lke to know when’s the next time we’ll see Easter on the 25th of April? Here’s your chance to find out,