Hi M.!
My son is 13 months old, so I know how you're feeling! As far as what to play with, I found that very ordinary things were facsinating to him when he was that age (still are, actually!). Jack really liked to play with empty gallon milk jugs. Sometimes I'll put a little bit of water in them and put the top back on...he loves to shake it around. Balls & boxes of all sizes are great toys for that age too. He might like Little People, if for no other reason he can stick them in his mouth. Pots & pans are good, plastic containers with lids, big plastic spoons, measuring cups...the kitchen is a treasure trove of toys. I also put on "shows" with his stuffed animals singing & dancing to music (my son LOVES music). I would also pick him up & dance with him. Plus I gave him a lot of books & let him "read" (a.k.a. tear up) my magazines when I was done with them. Now he can actually sit still long enough for a story and knows how to turn the pages. I found that no matter what I gave him though, he would quickly lose interest and be on to something new.
As far as crawling, I think they really just have to figure that out on their own. Jack didn't crawl until almost 10 months, but now he's walking. It seemed like he would never crawl (he could stand & walk holding onto our hands long before he could crawl), he spent several months army crawling/slithering on his belly. But then all of a sudden in the same week he learned to crawl & to pull himself up on stuff (other than his crib side or our hands) and he started really crusing along everything. Almost a month ago started walking.
As far as feeding himself, if he grans for his spoon, give it to him and let him try to feed himself. At first, I just gave Jack an empty baby spoon while I fed him with a different spoon so he could get used to maneuvering it to his mouth, with minimal mess. Then with thicker food (like mashed potatoes) I gave him the spoon with a little food on it. I also gave him lots of finger foods, like little cut up green beans, little pieces of soft bread, little cheese chunks (I loved the Crumbles by Kraft...no cutting!), flaked fish, blueberries, peas, etc. and let him feed himself while I fed him from a spoon. Then I bought a baby fork and started using that for some of the finger foods, around 10 months or so. Now he can eat from his bowl, he eats little sandwhiches by himself, and can use a fork and spoon proficiently (although the spoon is still messy, since it doesn't hold the food like a fork does!). Of course he has't mastered putting the food on the utensil yet, but that coming.
I hope this helps!
M.