Life-Savers

I think that every child has those particular items that calm them down in ways that nothing else can... am I right? Well, James has grown more and more independent as he has gotten a little older - he will be 4 months on the 9th and just plainly does not like to be held continually anymore. He likes cuddling when he's sleepy... but he will get to the point where he just plainly wants to be put down in his swing or on the floor.
This morning, while at church he had one of those moments - but it led to his being put in the church nursery for the first time... which was a success. They had a portable swing in there, so when he got fussy - I took him in...put him in the swing and he promptly fell asleep after I walked out the door.
Anyway - items that we can't live without - because they calm our little guy down:
1) Fisher Price My Little Lamb Cradle n Swing
2) LeapFrog Hug & Learn Baby Tad Plush - we use this thing EVERYWHERE... in the car it works wonders!
3) Fisher-Price My Little Lamb Deluxe Infant Seat - White/Brown
4) Baby Einstein - Baby Beethoven - Symphony of Fun
5) (image won't work) Bright Starts Hop Along Friends Play Gym
6) Summer Infant Swaddlesquare Cotton Knit Sprinkles, Mocha Dot
7) Infantino Vibrating Grape Teether
8) Summer Soothing spa and shower baby bath - boy colors - we've never really used the spa portion of the product - but he loves playing in his tub!
9) (image won't work) 5 - In - 1 Adjustable Gym - we just opened this one too, and he was a little tired and ready for his evening nap... but I know that his love of lights and sounds will make this toy a BIG hit.
10) (image won't work) Baby Einstein Around The World Discovery Center - this one we just got... but I know when he gets just a little bigger that he'll LOVE it.
Want to give me a little advice or wisdom from your experience? James will be 3 months old here in about a week, and he still hates laying on his tummy... so we've not gotten anywhere near him rolling over. Now, he will pick up his legs while on his back and start to turn his bottom over... is this okay? Should we be pushing him onto his tummy? Or just let him do his own thing and not worry about it?