Here are a few ideas for boys10-14
Gloves,bandana,pliers,hammer/nails screw driver/ screws, measuring tape,I very soap(it floats),face cloth,bandages,in a plastic soap box put in a bobber,fishing line ,fishing hooks( wind fishing line on an old bobbin) ,kite,balls,toothbrush,comb,notebook,pens,pencil/sharpener,eraser,nylon clothes line/ clothes pins,flip flops,swim trunks,t shirt,duct tape,coloured pencils,kaleidoscope ,magnifying glass,harmonica,hat sunglasses, puzzle ,flash light (extra batteries)collapsible cup, cereal dish, belt,whistle,balloons,leather bracelet,plastic pony beads,