Simple tricks/aids to help with daily life

Hi, My name is Matt and I am currently doing some research into Parkinsons aids as part of my Masters degree in mechanical engineering, I recently met a lovely gentleman who has Parkinsons and a couple of the simple but most effective 'tools' he used in his day to day life included a straw to help drinking and a plastic bag to aid moving around in his chair. I was wondering if anyone here had any other tricks they used using products that aren't designed specifically for Parkinsons that helped their daily life. Additionally if any one had any ideas that could use some very simple engineering/manufacturing in order to improve them?

Any and all responses are much appreciated.