Gilladian
Adventurer
If you don't want/can't find a battle mat, you can get flip charts with 1" grids on them at the office supply. I have one of these, and I keep locations drawn on it that I want to reuse - for example, the tavern the PCs like best to hang out at, the market square where they commonly buy and sell stuff, the manor house they've built. The reason is that they may have 3-5 bar fights in that tavern over the course of the campaign, or get attacked by goblins in the market this week, pick pocketed a few weeks later, and finally confront the evil wizard who has tried to conquer the town on the steps of the temple overlooking the market.
Otherwise, you can just tear off sheets and throw them away if you're not going to need them again. Especially if you don't have minis, you can draw movement lines and such right on the grid. A set of colored pencils or markers will help keep things organized.
Also, rather than buying plastic or metal minis, you can either purchase printed/print your own "cardboard heroes", or you can just use triangles of card stock with numbers/names jotted on them for the bad guys or even the PCs. Although game pawns (meeples?) can work even better for PCs.
Otherwise, you can just tear off sheets and throw them away if you're not going to need them again. Especially if you don't have minis, you can draw movement lines and such right on the grid. A set of colored pencils or markers will help keep things organized.
Also, rather than buying plastic or metal minis, you can either purchase printed/print your own "cardboard heroes", or you can just use triangles of card stock with numbers/names jotted on them for the bad guys or even the PCs. Although game pawns (meeples?) can work even better for PCs.