Toddler messy play

So my son is getting bigger and bigger, hes now started going to football classes, more and more identifiable words are coming out and hes getting harder to entertain! Having decided himself to drop his nap during the day, by 3pm hes grumpy, tired and irritable so what am I to do...MESSY PLAY! I'm pretty sure every toddler loves creating mess so an out of date bag of flour, a plastic serving tray and a whisk later we had this

Then we added water (and a lot more mess)

 He loved mixing it, squishing it in his hand, pouring the water and of course tasting it but it passed an afternoon, it was free and he loves it, Unfortunately afterwards I went in the kitchen to make a cup of tea and came back to this

Fast asleep, this quick 5 minute power nap added an hour onto his bedtime! sigh