Quick answer: dig up dirty junk or treasure, spray it clean to identify it, then keep your best finds for the personal museum. Exact display controls and museum bonuses are not published.
The official museum loop
- Official: dig up dirty junk and buried treasure.
- Official: spray the object clean to find out what it is.
- Official: hunt for rare items and show off the best finds in your own museum.
- Official: better shovels and spray bottles can be purchased.
A safe first-session checklist
Complete one find from excavation through cleaning before changing tools. Confirm where the identified object appears in your inventory, then use the live museum interface to locate its display action.
Keep one ordinary and one unusual find until you understand whether replacing a display returns the old item. That behavior is unknown from the official page.
Community evidence
Community gameplay videos show the loop in motion and can help identify interface changes. They are not a verified source for a permanent item list, rarity order, or best museum layout.
Unknowns and availability
Unknown: display capacity, visitor or income effects, item removal rules, museum upgrades, rarity odds, and exact controls. The official page currently reports no running experiences, so present availability must also remain unverified.