Last year I had a 2.5 month old, that was tough! (though easier than a 2.5 day old!)
I have three kids and we really do just a stocking and a gift...no need to drown them in gifts, they get plenty of time to play with theirs and their siblings. Christmas here is not about the present opening, it is about the present playing
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For a 6 month old I would get something like a 'hide in side' it is a soft cloth box, with I think 6 small toys inside. the toys rattle, or squeak, or crinkle, and have different textures/shapes. At 6 months your kid might be filling and dumping, or they may be just holding and shaking...(or more/less) but the hide inside concept will be fun even if he/she is only watching you shake stuff.
The actual hide inside I have is from discovery toys. but if you can sew you could prolly make one, and I am sure there are other companies that make them.