I have a NEW recommendation for you! This company does not know I exist (so, no, they’re not paying me for this). And I didn’t know this little tool existed either…until last week.
I was excited to put up our new Christmas tree because it is the pre-lit kind. (Putting lights on the tree has been my hubby’s job, and no, he didn’t particularly enjoy it). So, I brought the tree home from the store and put it up. See that dark section? Not very lovely!!! My hubby looked and looked for the bad bulb, but that was a nightmare since there is a coat of flocking all over the bulbs. So I went back into the store and they told me I could take down my tree and bring it back in – OR – buy the little tool that they use and try to find the bad bulb ourselves. I chose the latter! It took less than three minutes to find the bad bulb with the help of this little guy. NICE!
(I bought mine at Lowes; see link here; but I think they’re cheaper at Amazon)