The follwing experince is from a combination of shrooms, nitrous oxide, and the inhalent, rush (butyl nitrate, or some derivitive). I was laying on my belly in my dorm room. I had a cheap $20 carpet underneath me, and I was really fascinated by all its little fibers. I was pulling them out, while I kept repeating "To dee bird" over and over again. Thankfully, destroying my carpet was no big deal for me.
My most powerful experience also involved my crappy carpet, as I often laid on the floor while tripping. The designs kept shifting, and I felt as though my carpet was some vast area of land, and that I was some immortal being looking down on it. I was sure that 1000 years had passed.
I inhaled deeply from my bottle of rush, and then all the fibers turned into scintillating multihued jewels. I'm not sure what happened next, but the jewels became so beautiful that a mental switch was thrown, and I was catapulted into an ecstacy which may have only lasted seconds, yet left me weeping with joy afterwards. It was though my entire body was consumed in an orgasmic fire- kundelini awakening, perhaps? Afterwards, I felt as though a weight had been lifted from my shoulders, and that a spiritual recharging had taken place. All of my "issues" had temporarily evaporated, if only for a short time. It's been several years, but I hope to go back to that place one day, if only for a short time. I would've never thought that my cheap, $20 carpet would give me the most intense, orgasmic, and spiritual experience of my life!