I use X-acto knives the one like below to cut patters to the size I want to glue to the wood, clean fuzzies where the sanding will not reach, open the plastic bags the blades come in, clean wood out of cutouts, scrape things. I use one often.
A bigger handle with this blade to clean glue, as a small chisel, remove patterns from the wood.
I have also found I can easily sharpen the blades so I don't have to buy them often. I have a set of the little "Dia-sharp" diamond cards and I can sharpen these blade to sharper than they were new. Fact the blades I'm using now have been in my handles over a year and still work fine.