Note to self (mostly): there's a SQUEAK_FAKEBIGCURSOR env var which you can set to 1 to have the VM display twice as big cursor. I've no idea why there's the 'FAKE' part, from the source it looks like it just creates a normal X11 cursor that's twice as big. This should work will Cuis, Squeak, and Pharo, as it's part of VM.