Aww bless him, sounds like he is settling in.
You said you don't have a lot of money right now, but recycling costs nothing.
I've just done several videos about adding enrichment to your hamsters cages and the only thing I bought was some jute string (and hamster safe paint which is optional) which you can probably get for about $1-$2. With that you can make so many boredom breakers and hang things to keep your hamster entertained.
Setting Up The Savic Plaza Hamster Cage On a Budget - YouTube
Hamster boredom breaker - YouTube
Cardboard Mache Hamster Hides - YouTube
Don't feel like you have to watch any of them, just thought they might help.
Look forward to hearing more updates about Hedge.