Compact and UPS-friendly 1x1 loaders. Works with train cargo wagons, circuits, filters, and modded belts from Bob's, Krastorio, FactorioExtended Plus, Space Exploration, and Ultimate Belts.
Snapping only seems to work when building manually, or placing a blueprint with the proper orientation. Ghosts seems to automatically go into the container, no matter the direction of the belt connected.