On islands such as Santiago and Sao Vicente, there are more furniture importers and carpenters, often the local carpenters on these islands are less expensive than shop bought furniture. On some of the less developed islands there may be fewer local carpenters and no furniture suppliers. You could possibly contact those on Sal or Santiago and order furniture and have it sent to another island by boat, but check the cost of this with an importer. On islands such as Sao Vicente and Santiago, it will probably be difficult to find furniture suppliers that will provide you with furniture packs. There are not many on the other islands that have websites or who can deal with your enquiry in English. On some islands, items that you purchase for your apartment can be twice as expensive as the UK.
On Sal there are:- local carpenters that can make some furniture
If you are renting out your apartment you will have to give some thought to furniture items being damaged and the need to replace those items. You need to decide these things before spending your money on items you may not need or which are more expensive to replace.
Some furniture pack suppliers will also sell items individually. Those who don't want to buy a furniture pack can buy items according to their needs and budget.
Those who like and want to enjoy out-door cooking may also be able to buy a BBQ. Some of the large developers will only permit the use of gas BBQ's, these are now available on some of the main islands from different suppliers, but at varying costs. Standard BBQ's using bbq coal, ones that you can buy at some of the budget store chains in the UK or Europe are available in some shops on Sal, but you may end up paying more than you would for one in the UK or Europe.
Alternatively, you may wish to import furniture and other goods.