My dad killed himself when I was 11. What I wanted was stories and pictures. Stories about what he did with us when we were little, him taking us places, playing with us, holding us, laughing with us.....these meant more to me than anything except for the pictures. To look at a picture of him holding me when I was a baby, to see how his eyes smiled....I know he loved me. It's been 34 years since we lost him, and those pictures mean the world to me.

Grief counselling.

That is so sad. I haven’t had that experience but here is an article ( http://bit.ly/2Ete3dW )
I found about the grieving process that has some really good information for various age groups including teens. I hope it helps.

Give them pics of him, maybe frame one with him and them together, tell them fun stories about him, etc.

Advice for helong three teens who have lost their dad? Most helpful things to say to them, ways to help, and support? Thanks