Here's a simple friend attracting spell jar (shulker box) that I'm going to be trying to do for the coming school year! Here's what you'll need.
Dandelion (courage, happiness)
Lily of the valley (purity, wisdom, peace)
Oxeye daisy (happiness, friendship)
Rose bush (attraction, protection)
Pink tulip (friendship)
Bedrock block, iron, basalt or black dye (protection)
Moon or rain water (protection)
Honey comb, bottle, or block (sweetness, attraction)
A pink, yellow, or orange shulker box
Procedures
1. Get a skin that represents you, as you want this to effect you. It can be anything as long as it represents you
2. Throw your shulker box into a cauldron full of moon or rain water (make moon water by leaving a bucket or cauldron of water out overnight with your intent, cauldrons fill up when it rains) for an extra magic touch and protection
3. Place your shulker box down and fill the outside slots with your protective agent, (bedrock, basalt, etc) stating your intent for protection from bad and untrustworthy people
4. Put in the other ingredients how ever you want, stating each intention as you go
5. Put in any other ingredients such as banner or map sigils, or a book and quill of blessings or traits you want your new friend(s) to have
6. Go out and meet new people!!
You can put in whatever personal correspondences you have, and change it up to whatever is available in your world, like replacing the shulker box with a chest