If you live in Africa particularly West African sub-region, this period would likely be Harmattan - dry and cool, somewhat windy with some sunshine depending on your location.
It's a good time to process and dry your garden or farm harvests that get quickly perishable.
Even if you don't grow farm produce, there are certain foodstuffs that are more readily available in the markets this season - you may be able to get a relatively good price for them.
Likely due to Climate Change, certain harvests which are usually more abundant in September/October seem to have delayed and matured in latter months- Cocoyams, Sweet potatoes, Yams, Plantains, peppers, spices like Turmeric. Even corn harvests are available this December though not so much.
The foodstuffs are not really cheap but prices are relatively better in comparison to skyrocketed food prices
To process, remove the peels and cut the food item into small pieces or grate. Put in a tray under the sun- even if not sunny, the wind and dryness will help them dry. For quality control, cover with a net to prevent dust and pests perching on them.
Depending on how much you can preserve, they can last till February/March/April of following year. If you think foodstuffs are expensive at this period, it usually gets more alarming around that period. That is when land preparation and afterwards planting normally starts in earnest.
You can soak the dry stuffs in water for hours and then cook with the soaked water or further process them by blending into flour - there are various nutritious recipes that can be made from them or mix them with commonly used wheat flour sold in the market to make more healthy confectioneries.
Our continent has comparative advantage in sunshine. So drying stuffs is better when the weather allows. Alternatively you may use a dehydrator. But in many of the countries, electricity is not always guaranteed. .
It's always better to live prepared for any future eventualities than complain
