Christmas lights (Berry Lane Estate WD3)

This is a long shot as none are working, but this may be easily solved by someone with more practical expertise and patience than I have!
1. Vintage Osram lights used for Christmas tree (12). These go back to the '50s and are multi-coloured. I have no idea if spare bulbs can still be obtained for them (there are a couple of spares in the box) and of course, they are not LED.
2. Vintage Chinese lantern, about 6 inches high, though tassels hang lower. The fitting is one to be plugged into a light bulb socket in a lamp. However, it's quite pretty without a light in it and folds for storage.
3. Pifco mini-lights (20), bought within the last 10 years. No idea why they aren't working and probably designed to be thrown out rather than mended.

(Interesting that number 1 lasted happily for decades and these modern ones gave up after about 3 years!)

I'm afraid my technical knowledge doesn't run to attaching a photo here but would be able to do this for anyone who is genuinely interested, if you give me a mobile phone number.