I would appreciate any other general tips or suggested edits for finding things you guys may have to offer, and the readers will too.
Great guides! So much work done!
I hope the following may be useful to you and forum readers:
For neighbourhoods, I find the spawners for metals, rocks, gems and fossils spawn between 2.30 am and 3.30 am. Most of the spawners can spawn up to two times, thus leaving a 'double yield' for your Sim to collect. To explain, at the beginning of your game, it may be worth not collecting on the first day, but to wait until the early hours of the following day. You will do the same amount of miles getting round your neighborhood, but you may collect twice as much. This only works if you stay in the same neighborhood that time. In short, it's better to collect every two days than every day, if you see what I mean?
Also, it takes about 30 mins up to an hour for a newly visited area to spawn for the first time. Timing your visit after midnight, but before 3.00 am often yields double in rocks, metals, fossils, gems found.
As for MYSims Trophies and Treasure Maps: Treasure maps yield rare Trophies or a voodoo doll. There aren't that many rare Trophies, so when these have been found, it's better not to use Treasure maps. 'Dig' instead of 'dig for treasure' will often yield an 'ordinary' capsule which helps to make the rest of the collection. A Treasure Map sells for $80.
The ordinary capsules sell for $70. It's worth selling these if you've completed that part of the collection. There is only one uncommon Trophy (Doctor F) which is worth more at $75.
Postcards: A penpal request can be made every three hours. Obviously, one should 'check for replies' before repeating 'find a pen pal'.
That's all I have for now, because I'm not totally clear on the insects from OR yet. Most of these seem to spawn every 5-6 hours, but not all do.