Sounds good
. Cardboard is always good for improvised enrichment! A tissue box for a cosy hide, egg boxes with a hole cut in, toilet roll and kitchen roll inner tubes, loads of torn up plain white toilet paper for nesting. The hammy will be fine with all that until you can get a platform sorted. They need somewhere to retreat to with overhead cover. A small shoe box with a hole cut for a door can be a good hide as well.