There are a lot of TMs on Glucosamine. If one of them really wanted it it could cause a lot of trouble in a WIPO case. I'd be scared to touch that one.
I think BuyNylon is the best of the bunch. There are a lot of industrial Nylon Manufacturers that I'm sure would love this name. I'd market to end users in the low to mid xxxx.
BuyTraps is a close second, usually on here you'd see someone looking for an appraisal on the singular. I'd market to end users in the low xxxx range.