My DD will be a couple weeks older than your DS around XMas time, but here are my suggestions.
#1. Baby Einstein Exersaucer. It's stationary, that way baby doesn't get under your feet cruising around.
#2. Any type of Jumperoo, I like the one that goes in your doorway.
#3. Fisher Price and Leap Frog both have great toys that entertain baby while they are sitting up, or trying to sit up. Check out Amazon.com and Babie's R Us for toys also. You can also create a Baby registry at Babies R Us too, so you can select all the toys you like and email the registry to people.
#4. Go to OneStepAhead. Com and create a registry also. This website has fantastic stuff for babies, including stuff for safety, water and bath, feeding, toys, books, etc. We have a food grinder and cubes to put homemade food from them.
#5. Bath toys, teethers and rattles. There's a teether at One Step, that vibrates. DD loves it!
#6. Baby Einstein Bath Puppets, they are adorable and DD loves them.
#7. Disney movies, disney ornaments (for you to collect)
#8. Stacking blocks (soft), balls
#9. Baby Signing book or DVD or both
Gosh, you think I'm a little bit overboard with shopping for DD. That's why I'm creating a registry so I don't go broke buying all this stuff. But I hope the suggestions help.