Are pet loot packages worth getting?

With just Meso Magnet and Item Pouch, your pet will collect anything that it passes through when it follows behind you. i.e You will have to move around and physically travel over the drops to get the pet to walk over the item and pick it up. If you are attacking and the drop happens to land on top of the pet, then yes, it will pick it up. The pet will not move around on its own.

With Wing Boots, the pet will walk around you to pick up the drops on its own ONLY when you're standing still. If you move just a little, the pet will stop what it's doing and start following you again.

With Binoculars, the range where the pet will move around when you're standing still is increased.