I found this great video if you want to make your own sponge for painting. Great for kids activities or a serious paint job.
This is great if you want to find an alternative to sea sponge for painting.

Choosing the perfect colour scheme for your home is about more than just trends—it’s about selecting shades that suit your lifestyle, enhance your home’s value, and stand up to Newcastle’s coastal conditions.
Living near the coast means sunshine, sea breezes, and stunning views—but it also means salt air, humidity, and harsh UV exposure.
So when it comes to painting your home, choosing the right colour—and the right paint—makes all the difference in durability and street appeal.