Hoarders: toddler edition

Joshua, our middle child has always had hoarding tendencies. He would (and still does) cram all sorts of random junk into bags or boxes and carry them around the house and stack them in "secret" places. Now he has a backpack that he packs all sorts of things into including a full change of apparel, snacks and money.

Now, my sweet little baby is turning into a hoarder too! Or pack rat, not sure which. He picks up as many toys as he can find at once and MUST carry them all at the same time. As you can see from his big crocodile tear, he has trouble carrying it all and has a complete and total meltdown every morning because things keep dropping. I've tried to get him to carry a bag like his brother, but he still doesn't get it. And yes, that is a mini-colander on his head. It's his "hat".

At what point should I be concerned???