My DGS the same age does this at home and at my house - I actively encourage it as I think it's brilliant that he hands over bits of fluff or tiny bits of plastic wrapping rather than doing anything else with them. Ashamed to say I smashed the base of a wine glass the other day and even though I went over the floor with vacuum and cloth he found a piece of glass which had bounced to the other side of the kitchen and handed it over. He loves sweeping, dustpan and brushing, emptying the dishwasher, putting damp clothes in the tumble dryer - all of it seems very helpful to me. He tells his dad off for not closing the stair gate too and then closes it himself ?