Another option for her was to create her own box containers, even if they were quite simplistic in terms of overall design.
If they fulfilled their intended purpose, then she would not need to go out to purchase anymore that could be faulty in some way.
If Ash wanted to be able to build the boxes herself, then she needed the right materials to be able to assemble them.
The other parts mattered just as much, so she had to research a little to see what type of nails or strong glues were used, but the main material was the wood.
Purchasing the wood was not that big of a deal since it could be acquired in any DIY store or somewhere similar.
If they had a supply left available for sale during the times that Ash got there, then it could be purchased.
One of the biggest issues that she had was transporting the materials.
Ash could purchase as much wood as she could afford, but there would be a certain limit to how much she could actually carry with her.