That sounds ike a great idea @Pepsimax. The way @outlander created theirs was by firstly creating a list of the distractions and strategies that have worked before. Then she chose a few from the suggestions below.
Paint, draw, or scribble on a big piece of paper with red ink or paint
Start a journal in which to express your feelings
Compose a poem or song to say what you feel
Write down any negative feelings and then rip the paper up
Listen to music that expresses what you’re feeling
Take a bath or hot shower
Pet or cuddle with a dog or cat
Wrap yourself in a warm blanket
Massage your neck, hands, and feet
Listen to calming music
Call a friend (you don’t have to talk about self-harm)
Take a cold shower
Hold an ice cube in the crook of your arm or leg
Chew something with a very strong taste, like chili peppers, peppermint, or a grapefruit peel
Go online to a self-help website, chat room, or message board
Exercise vigorously—run, dance, jump rope, or hit a punching bag
Punch a cushion or mattress or scream into your pillow
Squeeze a stress ball or squish Play-Doh or clay
Rip something up (sheets of paper, a magazine)
Make some noise (play an instrument, bang on pots and pans)
I think this is the list I shared with you last night.