Hi K.,
Lots of good ideas already!
Why not make a batch or two of salt dough or homemade playdough for a family with kids?
One gift I really liked was done by my son's first grade class for their families. I was a room parent so I got to help. They made stationery. A few of us moms got a bunch of fabric (you could use paper) and used a special die-cutting machine the school teachers use. This is how they get all those perfectly-shaped construction-paper leaves that go on the bulletin boards in the fall, or the shamrocks in March, etc. You choose whichever shape you want, load that die in the machine, put paper or fabric underneath, throw the lever and the die punches out whatever shape you have chosen. I forget the name of this gadget, but many schools have them. Anyway, we punched a bunch of different fabrics in various shapes (flowers, snowflakes, sailboats, I forget what all else) . We also folded/cut a bunch of brightly colored paper into note-card "blanks", and provided the proper sized envelopes. Each child chose a blank and a fabric cut-out, and glued the fabric to the blank. I think they each made 4. The possibilities were endless! You could ask your children's teachers if the school has such a thing, and if you could use it after school for your own stuff. (I substitute teach and have done this myself at one school--there was no problem). Or you could offer to trade some volunteer help to the teacher for the privilege of using the machine.
Another way to do note cards would be to use decorative rubber stamps; or make the old-fashioned potato stamps we used to make before stamping became such a craze.
Or cut out snowflakes and glue to notecard blanks. A dark background will really make them pop. Or make the snowflakes out of brightly colored paper and put them on white or light card stock for a different effect.
Pine cones can be made into ornaments--spray paint or put glitter on, or glue little bows on; add a piece of ribbon or yarn to hang.
you could make home-made bird feeders from 2-liter pop bottles. I forget how, have never done it, but the instructions looked fairly straightforward.
You could also make mini-bird feeders out of pine cones--spread peanut butter on the cone, then roll it in birdseed, attach string or yarn for hanging. A little messy; can be "re-loaded" with peanut butter and seed.
There should also be a fairly simple way to make a picture mat or frame--maybe buy one from a craft store, then decorate it yourself with stamps, stickers, doodles, foam shapes, wallpaper scraps, shells, ribbon.....you can give the frame with or without a picture in it.
Pomanders--push whole cloves into an orange, either at random or make a pattern. Smells wonderful! You can attach a ribbon to hang it somewhere (ie closet) or wrap in pretty fabric (tie the excess fabric with a ribbon) and use to put in a drawer to scent clothes.
If some of this doesn't make sense, email me and I will try to explain better. Have fun!
K. Z.