This is an example of everyday existing objects that are created especially for stroke survivors. It is soft foam for people to grab it better.
I envisage creating something similar for more objects and also with different changeable tactile surfaces, so the patient can have a variety. Objects that I would like to transform are pens, and pencils which would adapt to the person’s hand. For now, there are such existing tools, nevertheless, I tried wrapping kitchen paper around a pen to make it thicker and to try it myself and realized how it did not feel stable at all. Therefore, it would more helpful to make it adapt to the person’s hand.
https://www.elderstore.com/soft-built-up-handle-utensils.aspx
https://hackaday.io/project/10197-3d-printable-stroke-victim-writing-utensils
The ultimate goal would be to create a set with up to 5 items and with different functions too. With this, people could have more control over holding objects and would train at the same time with it.
Knowing which surfaces to apply, would be clearer after interventions with stroke survivors or experts.
Overall, it has to be considered that stroke patients are in most cases not that flexible anymore and are less skillful than before, for which reason tools that support them to work as before, but also train at the same time are necessary.
It would also be interesting to integrate hot and cold sensory, just like I was advised by the physio. This could easily also be done with a material that easily gets cold in the fridge for instance.
https://www.essentialaids.com/equipment-for-stroke-survivors
Many still want to stick to their daily habits without anything to change, therefore certain tools exist, but the variety of surfaces could be bigger.
Cutlery and kitchen tool alternatives already exist in different forms, but there is room for advancement, especially for activities outside the kitchen.
https://www.saebo.com/blog/top-adaptive-kitchen-aids-for-stroke-recovery/