You could do what I did before... buy one of those 24 card holders and
do one frame with those card holders in it. Then start collecting
cards. They are small. Then when it's filled, you can swap the cards
out periodically... the holders slide out. Then you could do team
ones or perhaps hall of famers or something.
Pucks are another way to go; or buy programs and have them sign those
and just bag and tag them.
When I went to Bruins open practice, I used to just bring pucks and
cards. I've seen some collectors show up with posters, sticks (which
take up NO room to keep but keep track of who is signing it haha!) and
a LOT of game related stuff. I like to do odd or special stuff too.
I got a Ray Borque Night package and got him to sign a few of the
items at an event.
Probably the best and oddest item I've gotten signed was The Bruins
put out a set of two boxes of cereal. I got them for XMas and the
Bruins Wives Carnival and had some of the players on the boxes sign
them. Bill Guerin FREAKED when he saw it! I was the only one all day
at his table that brought one and it got a LOT of attention from the
other auto-seekers.
http://www.plbsports.com/products.htm
PLB Sports is a company that does a lot of charity stuff for
athletes. They did all of Doug Flutie's Flutie Flakes items, Bettis's
Super Bowl Cereal boxes, etc. They used to do stuff for Hull, Osgood,
Deadmarsh, etc. Even if they have no hockey stuff available, it can
give you some odd product ideas to look for online! Cereal box flats
take NO room like hockey sticks =)