The travel sized from
Walmart are perfect

The baggie needs to be clear though so they can see whats in it.
The most stressful part of flying for first time flyers or not frequent fliers is the security procedures. To make the experience less stressful
1. Prepare each member of your party before hand. All bags go through the bag scanner and people walk one at a time though the people scanner
2. All metal items must be removed from a person. This means all coins / wallets/ purses mobile phones removed from pockets and placed in the tray. Belts, shoes and hats are also removed and placed in the tray. Sometimes wire in bras sets off the alarms, so I always wear a non wire bra for flying.
If a person in the party has a surgical metal pin in their body, dont worry, just tell the TSA agent.
3.You help make this process less stressful by opening shoe laces, putting phones, wallets, belts etc in the carry on bag while in line.
4. The 311 baggie as well as laptops need to be removed from carry on bag and put into a separate tray
5. If the alarm pings, dont worry. You will just be given a quick pat down by a TSA agent. Females will have a female TSA agent, males will have a male TSA agent.
6. Sometimes they may do a bag search. If this happens, you bag will be taken out of the conveyor belt onto a side table and you will be asked to identify that its your bag. The TSA agent will do a quick bag search, similar to the bag searches at Disney.
7. Sometimes they do random drug testing. If this happens, dont worry. Most times they do this as they have quotas for example, maybe to test 10 people per hour.
8. After walking though the person scanner, you just wait for your bag to come through the bag scanner. There is always a mash up of people after the scanners putting themselves back together, putting their shoes and belts back on and fixing their bags