Do they eat finger food independently? Is it just the spoon you are concerned about? With my LO I do let him get messy with finger foods, and now he is very good at handling any finger food. With the spoon I will feed him some, and then at the end let him try a little on his own. It does get messy. If it is a very thin pureed you can try thickening it with rice cereal, etc.... and that will help them keep it on the spoon better. As far as playing in the food some of that is exploration. But if it is excessive you could address it. I am currently teaching my LO not to play with/throw/turn his plate upside down. If he does attempt to I will quietly say "no touch" and will take the plate away for a very brief time period (Say around 30 seconds). Then I will give it back to him and we will continue with our meal. Some would say this is expecting too much but now at almost 13 months the instances where he does try to turn his plate upside down are pretty rare, so it is working for us.... HTH