Thanks for all your messages. I must admit I have found some of the messages and suggestions on here upsetting and have been trying not to get paranoid.
Some more info. This is what I think. I am trying not to sound naive and have weighed up the info. I do feel I know him but this thread has made me a bit niggly.
I’m thinking he prob uses them in hotel as he has more time/space. He’s not away that much, but it is regularly. He usually texts or FaceTimes me while he’s away, including just before he goes to sleep, so I think he was be pressed to be using this stuff with someone else. He has only taken 1 vibrator away. I checked back in the drawer while he was away. The other one looks unused.
I forgot about this, but just after I found them, at one stage during sex I suggested we share his toys and he said we could charge this (blue one) up. I think maybe the buy 1 get 1 half price suggestion was right.He also suggested we use the butt plug together sometime... so maybe not quite so secretive as I first made out. I suspect he ‘graduated’ into the vibes from the butt plug, which was quite small.
I wondered about the enema but have looked it up and it is sometimes recommended. I assumed it would be like anal sex for females which can get quite messy 
He can get quite squeamish so maybe being err empty would solve that.
His straightforward response when I found them makes me believe he was not hiding them but was just keeping them there.
The above makes me think I can give him the benefit of the doubt.