template<typename T> class thread_unique_resource {
    concurrent_queue<T> queue;
public:
    struct Handle {
        Handle(thread_unique_resource* owner) {
            owner = ptr;
        }
        // Appropriate move constructors
        T t;
        thread_unique_resource* ptr;
        ~Handle() {
            ptr->queue->push(std::move(t));
        }
    }
    Handle get() {
        Handle ret;
        queue.try_pop(ret.t);
        return ret;
    }
};