It's important to note that there are no other Digimentals that can be used to armor digivolve Veemon. The Digimental of Courage is the only one compatible with his DNA structure.
However, Veemon can digivolve into various other forms through regular digivolution, which doesn't require Digimentals. For example, he can become ExVeemon, Raidramon, or even a more powerful form like Imperialdramon.