The Campaign Builder's Guild

I'm looking for free bonus content add-on materials to an upcoming subscription-based productline I am working on (map-based product). I'm looking for printable items, that could be provided as an add-on PDF, I'm not looking for non-printed products. The ideas I've come up with so far are:

1. Battlemap Tile sets - I've been creating a line of Endless Terrain map tile sets for a number of years and thought making a printable version as an add-on prop would be appreciated. All tiles are geomorphic so you can move tiles around and create your own layouts easily.

2. Paper Minis - that's an obvious one.

3. Card decks - printable to cardstock or paper and laminated by end-user, such as: Villains, NPCs, Monsters, Non-combat Encounters, Traps, Treasure, Magic Items, etc.

4. PC Action cards - like above, but helps GMs know what a player is committing as their next action: Ready Action, Spellcasting, Quickened Spell, Attempt to Sneak Attack, Charge, etc. The player places their chosen action placed face down in front of them, when their initiative arrives, they flip and reveal.

5. Paper Money or Paper Coins in varying denominations of Gold pieces, Silver pieces, Platinum pieces, etc. GMs pay out to players as treasure, players pay out to purchase stuff.

Any other ideas for props and accessories can you think of? These will all be free add-ons to a basic product.

Thoughts?

GP

I have a friend who sells a product called gaming paper. useful stuff really. we've used it in our dnd games a while back... shame i never have time to play anymore (by the way, this is just a cool thing a friend of mine made... not a commercial endorsement)

What's gaming paper?

Battlemap overlays.

It would be so nice for playing 4th Ed D&D to be able to say, "Blast 2 looks like this." [show cardboard overlay and place it over the character mini.].

"It's a 15 foot bridge, like this one."

"Close blast 3 covers the area in front of you like this."

In-world scrolls/notes/letters/etc. with plot hooks. You can have two versions of each; one that's complete with names, and one that has blank spaces to allow it to be customized for whatever campaign a group is in.

Hand-outs are always good, its just finding generic enough hand-outs to use in more than one specific adventure. For my first main product of this line is my Assassin's Lair. Included with this one will be a contract to hire an assassin (perhaps one filled out with a PC named as target.) Also wanted posters to kill or capture a particular assassin, as well as posters with reward for information about a certain nefarious person.

I guess if I could think of a variety of generic hand-outs, such as wanted posters - that might make a nice add-on product.