For example tissue holder, cup, small trash can. Thank You
Wd40 and rub out with 000steel wool.
Is it actual silver or stainless steel? If it's stainless steel use Barkeepers Friend...
This stuff gets rid of everything! Beware that it smells a little funky just as you're using it, but it'll wash away right after.
For actual silver you can line a bucket with aluminum foil, pour in boiling water, add 3 Tbsps of baking soda and let the pieces soak for 10 minutes... that with a little elbow grease after will likely get rid of it.
If it's corroded metal and not silver there isn't a lot you can do. You might try spray painting them with Rustoleum.
Try balling up a piece of foil and rubbing that on the rust. I did that on my dad's walker and it looked almost brand new when finished.