Dissolve effect without using SRP

Need to create a variety of dissolve effects when clicking on objects. Normally I would resort to using ShaderGraph but I am constrained to using the built-in pipeline.
Can anyone offer any suggestions?

Would this require using some custom shader or can something be achieved using the post processing stack?

You could give these ideas a try:

Alternatively, there are also some Assets in the Asset Store - such as:

.

Awesome help! Thanks!