I did it myself for the first time
here and I just used a large metal soup spoon to do the scooping.
Depending on the size of your pumpkins (and oven) you may be able to roast more than one at a time. I used up the pulp into cookies, bread, and two soups, but I think it would have been delicious on its own as a side with perhaps a little salt and pepper.
Keep in mind that you will have a lot of pumpkin to use up. If you have a cool dry space to store them, I might hold off on processing all of them unless you have a lot of freezer space you'd like to dedicate to pumpkin puree, or are planning on eating it relatively quickly. If you decide to freeze it, the only way I have experience with doing so is in Ziploc baggies. Put a small amount of puree in the baggie (the amount you will typically be using in your recipes, you don't want to have to defrost huge bags of puree when you may only need 1 cup) and let the air out. Lay the baggies down and spread the puree flat. It will defrost faster this way, and on the off chance you don't want to defrost a whole bag, you may be able to break it in half to get closer to the amount you want. It will also be able to stack or line up with the other bags.
Final point to keep in mind is that you won't have an even consistency from batch to batch like canned pumpkin puree. Either expect to need to use a little more of your homemade puree (adjusting the liquid content of the recipe a bit) or cook it down to make it more concentrated, or strain it over a cheesecloth. I left it as it was and just used more (one less step).
It was delicious and I will definitely be doing it again.