Pool Toys are fun ! No doubt !
Not only could they lure children into the water -(potentially unsupervised) but also can and will diminish the effectiveness of a pools circulation of water.
When a floating toy or apparatus like a:
Small body board
Small Squirt Gun
Large Squirt Gun -Nerf Super Soaker / Stream Machines and the like
Frisbee - Large or small
Blow up or Sports Ball
are left in the Swimming Pool they float on the surface of the water. Then the natural design of the water flow being generated causes them to float into the suction area of the skimmer (which is meant to pull in leaves and debris and not toys)
When this happens the toy or toys begin to block the flow of water to the skimmer inlet and reduce (sometimes signifigantly) the amount of water that flows from the surface of the pool and through the pools filtration system.
It also inhibits the natural skimming action that the skimmer was designed for as it (the skimmer) can no longer pull those leaves off the top of the surface and into the skimmer.
If water flow is diminished in this capacity it also may cause less water to be pushed through and filtered - there by affecting water clarity , water balance , chemical retention ,etc.
The Booster Pump is also affected as it needs a steady and unbroken water stream to operate the Pool Sweep (assuming a pressure side pool sweep is being used)
Who knew that the toys left in the pool would create such a Butterfly effect on virtually all aspects of proper pool functions.
Now you do!
Keep em organised in a Deck Box so they are out of the way and still easily reached.
I suggest making it a requirement of children to rotate who will retrieve the pool toys and who is tasked with putting them away.
"No swimming for you kids unless you put those toys away" (shakes finger at youngsters in a crochety fashion)