1. if you pick up a mailbox (for example), go into era fashion or the trade table house at start, and press 1 of your item slots until you don't have mailbox equipped then it will be disappeared and you won't be able to grab or use your items. if you go outside and grab/use an item, then you will throw the mailbox away. it can be done at events too.

2. Getting easy speed boost at gym:
on facebook you run on one of the treadmills and let someone PM you, open the PM, reply to it and close it again. you will keep running on the treadmill and get the full green bar without even holding the arrow button. (not sure if it was with the PM or with chat button, it was some time ago)

Graal819001