I have three Filofaxes in different flavours. One large A5 day-to-a-page for my daily lists, a smaller slim pocket size week-on-two-pages for my longer term reminders and another thicker pocket size with blank pages for notes and other important things. They're quite neat and tidy and help me feel organised because I know everything is in the same place. You can often pick them up on offer at this time of year, and you can easily find inexpensive knock-offs if the price is a bit high.
I use old scraps of paper stuck on the fridge with magnets, including my favourite one with the caption, 'I've never faked a sarcasm in my life'.
Haha, that's a good caption! I have a large mug purchased from ASDA many years ago, emblazoned with the words "NOPE, NOT TODAY", which still makes me smile when I use it.
I'm not specifically aware of a specific tools for Autistics, there may be some, and I guess may work for some but not be right for your needs
I think with any app its the system you use - and often that means multiple apps, and what suits me may not suit yours.
As I have an O365 subscription - then I tend to use that including : To Do, Outlook and One Note and also ChatGPT ("Go" Subscription) for all my organisation, I also have my outlook calendar linked to my Echo devices so it gives reminders. This works for me.
MS Planner is good but not on the O365 subscription as I like the interface. Trello was also good too. But again needs a subscription to be of any use - so look for a trial period.
I also used TODOist - which I really liked for tasks, and brielfy tried Remember The Milk too, I like apps that have mobile + web versions
