Is this case suitable for DI?

I am writing a WPF sample app, and in that I want to display list of items in view. View has MainViewModel which contains ObservableCollection<ItemViewModel>. Clearly ItemViewModel is so specific that there's nothing to abstract from it.

Question - When I build collection of these items in MainViewModel, is it OK to instantiate ItemViewModels manually, or should it be delegated to DI container?

I am familiar with MVVM (and DI too), so point here is not whether to have ItemViewModel (I need it). But if DI still applies here, I seek clarifications.