Oh dont sell special things ! - just stuff that does not really mean anything, - once that special stuff/memories are gone, (old saying "dont flog the family silver" you wont be able to get it back.)
Raid the garage - sell on at a boot sale (old clothes you never wear etc.
Saving a little every month is great - may not be a great amount ,but its a good morale booster
And yes it would be nice to give you kids "everything" but it does not gel well to them becoming caring/understanding/socally balanced children.
You love/attention/ and time are more important than anything else you credit card could buy !
Remember most people on the forum have been there/or going through it now, so even if you want to "bitch",use the forum.