By cutting the bottom of the tin with a knife or can opener, you can eliminate canned Spam's vacuum seal and easily slide it out when you open the top.
If you find Spam too salty, drop it in boiling water for a few minutes so that the salt will disperse from the meat into the water. Then, you can use it as usual.
If you want to alter the appearance of Spam, you can use cookie cutters to change up the shape. If you’re handy with a knife, you could also just carve it.
Running an unopened can of Spam under hot water will loosen the fat in it and cause it to separate from the can walls, making the Spam easier to remove.