In the large Volga location in Metro Exodus, you can find items for the crew members of the Aurora. Doing so will earn you the Friend of the Crew trophy.
The guitar and teddy bear are special items in Metro Exodus. These are gifts for your teammates that you can find in the Volga chapter. If you don't want to explore every nook and cranny, you might easily miss them. This guide will show you the exact location of the guitar and teddy bear in Metro Exodus.
The teddy bear is located in the southeastern corner of the map. You will find it between two safe houses, near the railroad tracks. Use the ladder to climb one of the structures, then make your way to the higher one. Follow the ladder up, and you will see a nest in the middle of the roof. Approach it, and you will find the teddy bear on the suitcase in front of it.
Head south from the path. The guitar will make a great gift for Stepan.
The guitar is located in the tower. Getting there without killing anyone is very difficult. There are several bandits on the first floor. You can't take them out — if you do, the enemies upstairs will notice you. Throwing cans will distract the bandits from the ladder.
Climb the ladder.
Continue taking out enemies as you move up.
Look around carefully — there are many valuable resources in the tower.
Pick up the guitar and return to the train. Do not jump off the tower, or you will die. The order in which you collect them does not matter. After you have both, a notification will appear that you have unlocked the achievement.