Pollution and health hazards from cigarette butts

This topic has been troubling me for some time now:

I am a father of two children under the age of four. We were recently on holiday and are always on the playground. 

On the beach, on the playground, on sidewalks - there are carelessly discarded cigarette butts everywhere. The cigarette butts are known to be highly toxic, especially for small children, and also pollute the ground.

In Germany, there is a fine, but it is hardly enforced. How is it in other countries?

I assume that this requires legislation by the EU. I assume that this is not a problem that only concerns me, but also other EU citizens.

I think there are two possibilities.

So that no more cigarette butts are thrown away carelessly, a fine must be correspondingly high. 10,000 euros without exception - because it is just as harmful.

Or a deposit system. A 1€ deposit per cigarette. The deposit should be paid back when you bring the cigarette butts back to the point of sale.

And if someone else brings the cigarette butts back, he or she gets the deposit.