They can go for a walk, a bike ride, walk the dog, go to the park, they can do some housework or gardening, they can make some art, play with various toys, put on make up, listen to an audio book, ask for a chore, cook something. I also usually take them out somewhere regularly (this weekend we went to beach and went to an art workshop.
Applying a teenager's mindset to the list (and it sounds very much like my kind of day pottering around the house in my 40s...)
Going for a walk? Where? For what purpose? Mine tend to be walkable only with an incentive like a McDonalds along the route. Not helped by being walked to near death by boredom in 2020/21. Possibly pokémon go, but been there done that, bored now.
Go to the park- there's naff all for teenagers to do in most local parks other than hanging out with friends, unless you travel to the best one in the surrounding area where there's more than a toddler-12 year old's playground. Most play equipment is not designed for 12+ and a lot of local play areas don't even come close to that. I could let mine wander down to the local park, but there is nothing of interest for them there.
A bike ride. DS2 ✅️ DS1 ❌️ DS1 is dyspraxic and feels uncomfortably vunerable on a bike despite being a competent rider.
Walk the dog- fair enough (not an option, we don't have one)
Housework/ gardening. Yawn, boring. Can be forced under duress, but it's not entertainment. It's a short necessary chore that fills more time with naggjng and cajoling than it takes to do.
Make-up (not applicable to my sons, not something I've considered a "thing to do", just a chore that you have to do for a wedding or funeral)
Audio book, I've tried encouraging this as my two struggle with reading due to dyslexia, but they are very particular about voice actors. Audio books tend to be background noise to doing something else rather than an activity in their own right.
Cooking- DS1 is scared of heat and sharps. We're gradually building him on basic feeding himself skills, but it's not fun from his perspective. DS2 is more willing but he's always got bored and drifted off after 5-10 mins.
Art/ Toys. DS2 will draw, mainly in evenings, not really in the middle of the day. Draw With Rob on youtube is good encouragement. Toys, DS1 likes his Warhammer and Lego. It's something he'll do for an hour at a time. DS2 does "play" but that's more of a drifting off into his own world and making sound effects rather than playing with items. He hasn't played with toys since he was 7 and lockdown starved him of inspiration by the summer.
Board games are out unless we're in the mood for WW3... our pb on Monopoly is DS1 storming off ranting before we'd even set the money and board up. The egos in this house are too competitive and fragile 😂
Teenagers are a weird interim age, even with development differences in the mix; they are still non-child, non-adult bundles of stroppy hormones. Even NT teenagers are rarely mature and self-motivated enough to do half that list willingly, but will probably do it under duress with much threat of consequences. ND teenagers still have those hormones but often struggle with executive function on top. Mine are burned out by keeping up in school and just want their brains to zone out for great chunks of their leisure time, and indulge their interests while they gradually recharge slower than average. DS1 is often ill on holidays because of this dynamic and that slows everything else up on top.
Their brains aren't wired to entertain themselves in the way that they did when they were 8. Teenagers and adults that "play" do so in a much more closed way than younger children do, it's more focused and less random. Brains specialise through the change from childhood to adulthood.
It's not that the list of activities is bad or unreasonable, but it's realistic that they will not be self-motivated to fill their day like that, and a lot of that they will need a lot of chivvying to do. A lot of the list walk/ cycle/ walk the dog/ park are variations of the same theme and you wouldn't do the 4 as seperate activities on one day. Walking the dog in the park is 3 in one go.
There is still plenty of time in a house day to do some of those things each day and have more screen time which is how teenagers have filled chunks of their time since the 80s/ 90s. Non-screen time is important, but most teenagers can accomodate more than 2 hours per day. Most teenagers who are not spontaneously sociable with a group of local friends will feel like hard work with those expectations because you're battling their desire to zone out doing their own thing.