Node queue for different purposes

If you need a list of nodes on which you can add, remove reorder nodes, you can do it with Nodequeue from Structure > Nodequeues. It has a built in integration with views and with features trough fe_nodequeue provided by features_extras

For integration with views, add to your view a Relationship Nodequeue, check "Require this relationship" and "Limit to one or more queues (recommended)" and select your queue from the list.

Now you can define the nodes and order for your blocks, slideshows etc.