Ok, don't get offended. It's only out of concern for the parrots or their behavior. These are nice pictures and it's nice that you're sharing them but a few things stand out:
Pen Chewing - I'd never give a parrot a pen to chew on or let them swipe them. The ink is anywhere from toxic to not good for them. A Cape could shatter a pen like that in half a second and get ink all over its feathers and ingest.
Stovetop Playing - Even though the stove is (obviously) off now, I wouldn't let parrots play or land on it ever. Parrots are creatures of habit. When they know some place is ok to go (and even more so when there is tasty food there), they go their at will. You inadvertently taught the parrots to go on the stove. Which is really the exact opposite of what you want them to know. It's important to never have the parrots out when the stove is hot anyway, but there's still a small chance that this can happen. Even more so with a flat electric top like that. Could be that someone forgot it on or maybe even parrots played enough with the knobs to turn it on. On the other hand, when you never give your parrots a chance to do something and they never see you do it, they usually leave it alone. For example I have a desk across from my parrot's cages that is full of stuff that I wouldn't like to be chewed but I dumped it there anyhow. Since I never use that desk and the parrots never went there before and see no benefit of going there, they simply don't. They see it every day from their cages but they leave it at that because they are used to seeing it as a passive thing and not an active thing. On the other hand things I encourage them to do or things they see me doing, they want to join right in.
Even if you are 100% perfect with ensuring they don't get hurt on the stove, I still don't believe in allowing bad habits to develop. If for some reason some day the parrots need to be cared for by someone else and they have a bad habit, it could hurt them. Practicing good habits up front is the best long term strategy. You'd never let a child play on a stove....
The bicycle enclosure doesn't look tight enough that the Cape can't get out. I like the idea of a device to safely take your parrot on a bike ride, but if it isn't fully closed, I feel the biggest risk is of the parrot falling out and getting caught in a pedal or wheel. That's why I'd never bike with a parrot on a harness. Even if all fly-off and loss risks are prevented, the danger of getting caught in the wheels/chains/gears, etc is too much.
Looks like you feed colored pellets, it's been talked to death so I won't get into all the details but they are far from ideal. I'm not thrilled about the idea of taking a clipped parrot outdoors without a harness but I'll grant you that with the way your yard is enclosed and their size you'll probably get away with it. It's fantastic that the birds get outside but I'd be a bit more protective regardless.
Lastly, I'm appalled to see a clipped Cape Parrot. I don't like seeing clipped parrots at all. But I feel like some parrots especially take worse to it than others. Budgies, Cockatiels, Conures, and Macaws seem to take it less bad than say Capes and Greys. Dunno about Eclectus. Not that I would in any way suggest clipping those other ones but I see it as a much bigger crime to clip a Cape or Grey because of their personalities and clumsiness. It seems to take a far greater toll on them. Looks like you have a young male Cape Parrot? I think you'll run into some pretty serious biting and aggression problems. Capes are really... well let's just say they get what they want. The flighted Cape flies away before things get too hectic but the clipped one bites. And I can tell you, getting bit by a Cape sucks! I can't count the number of times my Cape has fallen down (even with the ability to fly). So I don't even want to imagine how much more frequently he'd be hurt for all the falls where he did save himself with flight.
I hope you will consider these things and ways to fix them. If you are set to change them but need help, that's what
my articles and
this forum are for. I didn't post all this at first because it isn't directly relevant to the topic. But when I see a cute picture of a clipped parrot doing something potentially dangerous, I can't think "cute parrot" because all I'm thinking about is "poor bird is clipped" and "poor bird is going to get hurt." I can't overlook those things out of concern for the parrot.