I have found since having boys that they like things that hook up to other things (tow trucks, helicopters with tow cables, cranes.) I saw the Plan Toys Crane Set and thought they’d like that. There’s a little man to run the crane and several construction items, like signs and a cement mixer. It’s eco-friendly, non-toxic, and brightly colored but pricey at $69.99. Little boys can be rough with their toys, though, and I’m sure the solid wood construction would stand up to them much better than a cheaper plastic version.