Omega Ruby: I have done quite a lot of things here. To start with, I planted a bunch of new berries in addition to the ones I already had planted. All of them eventually finished growing, and I harvested them. Now I have over 20 of every type of berry I have on this game, and over 100 of the EV-reducing berries since I have found it to be better to have too many than to few of them.
I have also continued with catching legendaries. I put Ho-Oh in my party and soared, which unlocked the Trackless Forest. Inside this small little forest, I saw another strange portal. I interacted with it at three different times of the hour, which led me into meeting Raikou, Entei and Suicune. I caught all of them, they had their desired Nature eventually, so I kept them. It is somewhat weird that these games use the original chiptune music from Crystal as opposed to a new version of the track, or the updated versions from HG/SS. Still, the melody is great, so I don't really mind.
With these three beasts caught, I had caught all the Johto legendaries on this game. Which isn't many, just 4 in total. I had decided that the next region here would be Unova. Started slightly so far, I put some Pokemon I needed in my party, including a Castform, and soared near Fortree. I saw a strange dark cloud and went to it, met Tornadus. Caught it easily and it had the right Nature, so I kept it.
I have done a few other things too. I put together a team and had a rematch with Wally at the Battle Maison. I won, used my Mega Metagross against his Mega Gallade for the coolness. But I have not battled him for the last time.
Also tried surfing on some different Pokemon. I withdrew the Wailmer I caught a while ago, taught it Surf and Dive. Tried surfing and diving, it didn't feel different than usual but the unique sprite was neat even if I had seen it before. Then I did the same thing with the Sharpedo I caught a while ago. I knew it would have faster surfing speed than any other Pokemon, but I didn't think it would be this fast! I was blown away. The speed underwater was noticeably faster too. I find this unexpectedly positive.
Finally, I have also tried the first two menus at the Mauville Food Court on this game. First, I tried the Village Sub Combo and won all five battles in one round each without any problems, I got a Nugget which I sold. Then I tried the Magnemite Croquette as well and my experience from Alpha Sapphire helped me here as I managed to defeat the two Shedinja on the last round. I beat everything in one turn here as well, got a lot of money and a Pearl String, which I sold.
Alpha Sapphire: Like on Omega Ruby, all of my berries were done, so I harvested them. I now have over 20 of each berry and over 100 of the EV-reducing berries here as well, so I can cross it off the list. I don't think I'll plant any more berries in the future unless I really need to, because I can't see any point in doing it.
I have caught some legendaries here as well. Put the right Pokemon in my party, including three with maxed Friendship, then I soared to the Nameless Cavern. Found another portal there. Then, at various times on various days, I met Uxie, Mesprit and Azelf. I successfully caught all three of them with the Natures I wanted them to have. Also made my way down to the bottom of the Scorched Slab where I found another portal. Interacted with it and met Heatran. Caught it very easily, on the first ball.
Apart from that, I have re-taught Swords Dance to my Smeargle. I didn't really need Charm to begin with and I don't think I will need it for anything else in the future either.
I have also tried the two remaining menus at the Mauville Food Court. The Magnemite Croquett went easy until the last trainer. She had two Shedinja which I couldn't beat in one round as only one of my Pokemon knew a move that could hit them, and it wasn't a move that could hit both of them at the same time. It did give me some good information for when I did this on Omega Ruby afterwards, though. The Mauville Ramen Bowl also went pretty well to start with, though some battles were a bit scary. First the battle against the Triple Intimidate trainer since I did the stupid mistake of bringing three Physical Attackers with me, and the Prankster Stun Spore Whimsicott battle was rather terrifying too. I won both of them, though I lost against the Ditto trainer. I made the stupid mistake of brining two Pokemon with Fake Out with me, which these Imposters used to stop me in my tracks. So I only managed to beat the first 7 trainers and didn't get to face the 8th. Might go back in the future and try again, not sure though. Either way, I got a lot of money and some Big Nuggets which I sold to get even more.
Finally, I have done two more things. I battled the Inverse Battler here as well, but he was laughably weak as expected. I doubt I'll battle him again on either game. I also put together a team of some kind and battled Wally. Used my Mega Salamence to defeat his Mega Gallade, which was cool to see. But I'll be back to battle him at least once more in the future. Either way, now I have done those two battles on both games, so I'm crossing them on the list.
Next up on both games, I'll continue with catching legendaries until I have them all. Will also do other things besides that.