Pool Table and Fridge -> i will try to give them today.
About "rewards" i suggest something like this:
a) Books of achievement levels: 30, 50, 75, 100 etc
b) GM rare items like : Tables, Ice chests, glowing items, etc
c) Regular stuff: Ammo, Armors, Guns
d) Unique items: Implants
This is how it could look like:
1. 3x simple maps - lvl 30 book + some b) or c) reward
2. Location with 2+ maps - lvl 50 book + some b) or c) reward
3. Location with 4+ maps - lvl 75 book + some b) and c) reward
4. Location with 7+ maps - lvl 100 book + some b) + c) + d) reward
Of course maps have to be good.
Other rewards are also available on demand.