I'm surprised there aren't more suggestions which use intentionally-similar abbreviations. The American customary system is rich with abbreviations which are deceptively similar, and I think the American computer memory units should match; confusion is the name of the game. Some examples from existing units:
- millimeter (mm) vs thou (mil)
- meter (m) vs mile (mi)
- kilo (k) vs grand (G)
- kilonewtons (kN) vs knots (kn)
- statute mile (m/sm) vs survey mile (mi) vs nautical mile (NM/nmi) vs nanometer (nm)
- foot (ft) vs fathom (ftm)
- chain (ch) vs Switzerland (ch)
- teaspoon (tsp) vs tablespoon (tbsp)
- ounce (oz) vs fluid ounce (fl oz) vs troy ounce (ozt) vs Australia (Ozzie)
- pint (pt) vs point (pt)
- grain (gr) vs gram (g)
- Kelvin (K) vs Rankine (R; aka "Kelvin for Americans")
- short ton (t) vs long ton (???) vs metric tonne (t) vs refrigeration ton (TR)