High quality avatars are somewhat challenging to build, but you can do it with the right software. You're going to need software for photo editing like Photoshop or...
There are a number of ways to make your slumber party invitations original, to make your guests feel extra special when receiving an invite to your slumber party.
Punch with dry ice is a good add on to any party. This is especially true if the party's theme requires some foggy effects, such as at a Halloween party.
If you have a bunch of leftover fabric laying around the house or some old baby clothes, then consider the idea of making your child or adult a patchwork quilt.