Safely? They can safely stay frozen two days longer than forever.
There is a difference between safety (which is a health issue) and quality (which is a taste issue) when dealing with home-frozen foods. All foods will suffer a loss of quality. But there are many factors which affect how this happens, not just the length of time they're in the freezer. Included would be:
1. How you cool-down and freezer-prep the food.
2. How it is wrapped.
3. The nature of the freezer (i.e., self-defrosting, zero-degree, etc.)
4. How the food is defrosted.
Generally speaking, I would guess the items you mention can be home-frozen for from 2 to 6 months with little to no loss of quality.