
MagicGrips - for Magic Mouse 1 & 2
Makes Magic Mouse way more comfortable. Widens & relaxes your grip. Creates big concave surfaces to place your fingers. Great for all hand sizes, especially nice for medium & large hands. Fit's Magic Mouse 1 & 2. Ambidextrous. Solid silicone rubber + removable 3M adhesive. Bonus: XL thumb grip...

not an affiliate link and I have no association with the company, but I've been using them with my space grey MM2 since last year and they've been a game changer ergonomically
it may ruin the colored aesthetic of the mouse (ymmv) but if you aren't happy with your thumb and pinky wrapping around the inward shaped aluminum, give it a whirl! May be pleasantly surprised