Wow! Thanks so much for all of the hints VFMF, this will help a lot of people that try to look in various places for more than one problem. Just thought I'd make some additions from my experience

DON'T move your peeps when they're bringing a new collectible
to the collectible cabinet, but you can move them when they are selling one. The money will be automatically credited to you.
I do move my peeps and it has always put the new item in my collection automatically.

Just make sure you only move them after they are already carrying the collectible, otherwise they'll drop it and it can disappear.
The rule of kid beauty contests: if you think the kid's ugly, they probably won't win. But if they're pretty/handsome they probably will. (This is learned solely from experience. One of my virtual kids came in 8th out of 7... ouch) But, this could just be random. I don't really know yet.
I'd hope it's random since there's a different idea of beauty for each player! I know sometimes my taste is definitely out of the ordinary, but I'd love to know all children have an equal chance of winning.
If you have trouble getting the salty candy trophy, try having your peeps have a couple kids. They will do misbehaving things, facilitating the need for salty candy.
You can pick up and drop a child multiple times until you see a naughty action such as "Banging Dishes", "Jumping on Bed" or "Drawing on the wall". I do feel guilty because I'm trying to get them to misbehave, but I always pick up and drop them until they do something good for their health such as wash their face and then praise them twice.

Profession magazines don't provide a visible boost in the career progress bar, but they will eventually help. They got one of my peeps to a level 8 career.
The profession magazines pretend your peep has done one work cycle (from what I've seen) so this will have a greater visual impact on the lower levels of your peep's career.
If you have the choice between buying a house upgrade that will net you a trophy and one that won't, get the one that will.
From what I've seen, all of the upgrades will get you a trophy except for the first office/kitchen/workshop upgrades for $5000.. although you do need these to reach the final upgrade and trophies.
If you buy your peeps a different outfit, the new clothes won't show up in the family tree. They'll look like they did pre-clothing change.
The Family Tree will not show any updates besides name changes whether you take away a dislike, or add new likes to add onto the clothing changes.
Yes, there are only 4 plates on the table. No, it's not a bug. Yes, they have to eat in shifts. Oh well.
I never understood why they only put in 4 plates, although you can feed 5 at a time. That's why I put a plate of fruit in my kitchen mod

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Thanks again for this topic! I saw at least a few things I didn't know about yet.
