When we had friends up a week or so ago we were all having a go at zentangle and I have been trying to get my dad interested in it too so I promised him a zentangle card for his birthday.  Now zentangle can look a bit complicated but I have kept this one quite simple and it really is easy to do.
I used the computer to print out the word DAD using Davida Bd BT font then doodled in and around that.

Card:  white
Ink:  black pens, charcoal pencil