I've done weed, gas, mdma and that's it. Personally I think drugs are safe if you are not an idiot and treat them with respect. I still can't believe why many of them are illegal.
I want to try LSD and probably will after the holidays when I'm back at uni. I tried MDMA for the first time the other weekend and it is just the most amazing thing ever. I was sensible and had others who had done it before around me, it is just hard to describe how it feels, but to people who haven't done it and enjoy alcohol, it is definitely something you will enjoy!
Oh, I also tried salvia but it didn't really work for me, maybe I didn't take enough of it. I am quite glad because I live in a house with two others who like drugs and we all share the same opinion with regards to them being decriminalised. One of them has taken most things so he is slowly introducing me to them. We normally smoke weed about 3-4 nights a week or after a night out, I did after taking MDMA with the advice from my friend that it would help with the comedown and he was right.