let the cursor blink slowely in insert mode while idle to make it easier to find

.gvimrc

 set guifont=Menlo:h14
-set gcr=n-v-c:block-Cursor/block-Cursor-blinkon0,i-ci:ver30-block-Cursor-blinkon0
+set gcr=n-v-c:block-Cursor/block-Cursor-blinkon0,i-ci:hor20-Cursor-blinkwait2000-blinkon1500-blinkoff500
 
 " Hide Toolbar from MacVim
 set guioptions-=T