They can add up, if you get enough of them, and are very very patient. But most of the time, I get something like 0.1 of a token that has a value of maybe $0.0005 per token... and I only get that tiny bit once every few weeks, and (as you said) half of it is staked.

By the end of a year I might have something like $0.01. But every first week in January I painstakingly make my way through my Hive-Engine wallet and process every single one of them. Some are so insignificant they can't even been traded, so I send them to @null, just to get rid of them.

=^..=