My grandma has a weak grip, because she had polio when she was little.
But she likes playing Braintraining on the DS.
This is what I've done to make it easier for her to play the game. I'm going to take it up to her at Christmas.
(My dad took the photos, because he didn't want sugru fingerprints all over his camera.)
Step 1: Materials
Sugru (my dad has loads, and he let me have some).
A plastic milk bottle.
Sharp knife (I borrowed by dad's little Leatherman.)
Rotary tool with a grinding thing on the end - I used my dad's cheap cordless one.
Things to poke into small gaps and press Sugru into place - I used scredrivers and an old pen.