The name Dollar Tree is the wrong name...it should be $20 Tree. lol I always manage to find a tone of stuff!
If you look in the baby section there, you will find the diaper bags can be used for poop bags and there are 75 bags to a box. They used to be 100.
I like their knick knacs for the holidays. I have a window ledge in my kitchen that I can decorate according to the holiday and always seem to find some cute stuff at Dollar tree for that.