Right Alt or Caps Lock keys are often chosen for ergonomic reasons (in the latter case, use the combination Shift+Caps Lock for normal Caps toggle). Alt+Shift is also a popular combination; it will however lose its usual behavior in Emacs and other programs that use it for specific needs.
Tiqeffalin Right Alt neɣ Caps Lock zgant ttufernent i ssebbat n unagrahal (deg tegnit-a taneggarut, seqdec tuddsa Shift+Caps Lock i uqluqel amagnu n Caps). Alt+Shift d tuddsa daɣen yettwassnen,; ad as-iruh wudem-is i nennum deg Emacs d wahilen ara tt-iseqdacen i yisuturen usdiden.