Hi again Steve,
Music & sport sound good. I know quite a few people who've done well with music just by buying CDs from Walmart etc and reselling them on eBay for a profit. Not everyone lives near a big department store or music store and so they will often pay more for CDs. Buyers also notoriously under-research prices for music, so that can also work in your favor.
You can also buy them second hand and resell them too as long as they are in good condition and unscratched. All the classic rock bands are always popular, as are current chart toppers. Or if you are interested in a particular music style you can research that niche and find out what the demand is like.
There is quite a large collectors market for LPs too. However, that would involve a lot more time on your part sourcing them.
If you are wanting to import, you can look at no-brand musical instruments from China.
Unbranded sports equipment also sells well, although i advise staying away from golf equipment because that is very competitive.
Just start researching music titles and different types of sport equipment in eBay's completed listings and see what there is a demand for. Hope that helps :)