Backpack of Awesomeness
Backpack can carry 3 or 6 more items, has a jetpack, parachute and ladder cause its just that awesome.
Basic Pack can be made first under basic woodworking and will help speed up carry stuff around of up to 3 extra items
Back Pack of awesomeness can be made later under advance woodworking, has the same as the basic but an increase of 6 items to carry with increase of skill.
Both these can be bought in the shop for coins if you do not feel like making it.