Is there a way I could store multiple objects of different types in a container, say, a vector or map or an array?

e.g
template <class T>
class Holder
{
    public:
        T * m_ptr;
        Holder(T * ptr)
        {
            m_ptr = ptr;
        }
};

class Cls1
{
    xxx...
};

class Cls2
{
    xxx...
};

class Cls3
{
    xxx...
};

int main()
{
    Cls1 ptr1 = new Cls1;
    Cls2 ptr2 = new Cls2;
    Cls3 ptr3 = new Cls3;

    Holder<Cls1> hobj1(ptr1);
    Holder<Cls2> hobj2(ptr2);
    Holder<Cls3> hobj3(ptr3);

    //How to store the holder objects hobj1, hobj2, hobj3
    // in a STL container or array?
}
 

I understand there is boost::any
Apart from this, is there any workaround possible with C++ standard libraries itself?

Derive them from the same empty base class