1, 3, and 5: Play-Doh. Not even necessarily one of those goofy fancy sets, but a basic cutter set w/ a giant pack of dough containers. Buy from Amazon so that shipping is cheap or free. My kiddos LOVE Play-Doh and go thru cans of it like it's water. Or art supplies. Not kits, just general supplies. Again, order it all together for better shipping. Highlights magazine publishes High Five, which is for the preschool set. My girls love this magazine.
I am partial to giving and receiving gifts of food. I don't want candles or soap or lotion. I don't use mainstream versions of these items anyway. Even candy or food that you don't really care for can be given away or shared with others. Food is consumed and doesn't need to be displayed for all eternity. We have an excellent chocolate shop here & it makes great gifts. Especially fancy or silly stuff that people are not likely to buy for themselves or their own kids.