I am attending a birthday dinner next week for a friend's husband. He
is 35 and I can best describe his interests/passions as:

KISS
Jaws
Conservatism/politics
His one-year old daughter (who just learned to walk)
Poker

Given a rather eclectic taste, can you come up with some good ideas
for a birthday present? I'm splitting the cost of the gift with one
other person, so I'd like to keep the cost to around or under $50.

I was thinking perhaps a gift basket with different items, each
related to his interests, but don't have many ideas past that.  I know
he has a lot of KISS memorabilia already (DVDs, CDs, books, figurines,
wine bottles, etc.) so I'm not sure how easy it would be to find
something unique or that he doesn't already have.

Your suggestions for a birthday gift would be greatly appreciated!

How about  
"KISS Celebriducks!" 
http://store.yahoo.com/eprice/kisrubduc.html

of if you want to get off cheap:

"52 Reasons to Re-Elect Bush Playing Cards - in '04"  on eBay right now.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2234620277&category=1438

or "G. W. Bush Playing Cards/Authentic"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3905227036&category=4103

A really great book ...

How about Herbert O Yardley's 'The Education of a Poker Player' (1957)

There are 115 copies available on Addall, to suit every budget:

http://used.addall.com/

Incidentally, a new biography on Yardley has just been published ...
Amazon shipped me a copy yesterday: 'Reader of Gentlemen's Mail' by
David Kahn.

Don't know yet if it's any good.

Give him a 1$ Casino Coin (plastic thingy) and tell him that he would
always win poker games.. if he carrys the coin in his wallet ;)

Poker Players are superstitious lot.. and they would bite anything ;)

How about a severed head, or hand, as a token of your love and adoration?

A guy with a one-year old daughter?  "They" need a train set:
http://shop.vendio.com/taof1/item/576555818/index.html?s=1080731159

Or if that doesn't work, something that flies:
http://www.gatelys.com/blcore1.html

And since she may be a future pilot, the daughter needs one of these. 
After our daughter was beyond toddling, this was mounted on
monofilament from the ceiling in her bedroom:
http://store.yahoo.com/iqkids2/ridonwoodair.html

More traditional, but still a necessity for every child, is a Hot Wheels track.

Have fun!

Omnivorous-GA

A selection of favorite read-aloud children's books would be fun. 

I recently attended a baby-shower where everyone was asked to bring
their favorite children's book inscribed for the baby in lieu of
greeting cards for the shower presents. It was fun to see the
reactions of delight at many of the titles which were sometimes
accompanied by spontaneous recitations.

Reading aloud to a one year old is wonderful and can start a habit for
years to come.

~ czh ~

Those ducks are absolutely hilarious! And for a dad who no doubt wants
to get his daughter started off right in terms of music appreciation,
they will definitely do the trick. I'm sold! Many many thanks =) Claim
your prize if you will by inserting as an answer.