I imagine my current standard would suffice.
In my D&D bag I have:
One tube of Red/White/Blue dice: d4/d6/d8/d10/d12/2d20 + %
One tube of bright yellow with black #s - same combo as above.
And a pencil case with another+3d4, +6d6, +3d8, +3d20 (including my original d20 - no way I'm leaving this...