Please help...

What do you get a father for fathers day when you are pretty sure that dad either hates you or wants nothing to do with you?? Our relationship isn't great. I love him a lot, but I feel like he hates me or never even wanted me to start with. He was 18 when I came to be, so I pretty much fucked up his entire life, along with my moms. He doesn't really ever talk to me or anything. I've been trying really hard to try and create a relationship with him and have gotten nowhere. (I am 20 now) I'd like to get him something for fathers day even if he does hate me...