When I do a big tidy of the kids toys I tend to sort them, not that the kids play with any one category of toys at a time - I've been served tea with toy screwdriver parts in toy saucepans before. So it was more for my benefit than theirs, tho they love bags of any sort, when I made a Medical Bag and a Tool Bag to put all their medical and building tools in.
I used fabric from my stash and some left over Vliesofix and made a simple tote bag to which I had raw edge appliqued a red cross and a hammer onto. I even used a french seam on the bags because I couldn't be bothered zigzagging the edges and this way they can't fray. Only took about an hour to make both and as predicted they're used for carting around toy food and books, not medical instruments or hammers and spanners. But their eyes lit up when they first saw them and they ARE being used so I can't complain.