D.M.
Hi S.,
Our baby girl has only just passed this stage - she is now 7 months old. Five months is such an important stage because it will be when your baby boy is beginning to develop those needed muscles to both turn over, sit up and crawl. I would avoid to many exersaucer type things at this point because - although they entertain him, they don't allow him to build his needed muscles. I would encourage you to put him on a blanket on the floor - sometimes on his back and sometimes on his tummy. Give him small handheld toys that he can manipulate. Sassy has a gift pack of them that you can by online with Wal-mart.com that is real nice. I think there was about 10 or so, different stages of handheld toys in that gift pack. Anyway, if your little one is a little bored - it will only encourage him to move around and try to turn over and build those muscles which is great. Our baby girl started sitting up on her own at around 6 months and that really opened up the possibility of toys we could get her. We then bought stacking rings and shaped blocks and other various toys that she can grasp and increase her fine motor skills with. Best of luck to you - have fun!
D.