How to intensify a shrooms trip?

[spartana4]

Where I live, shrooms are quite expensive. Way more than I've read about other places. It's $15 a g and $45 an 1/8th. I'm planning on tripping with 2 close friends but I'll only really be able to afford 1.5g's for each of us. This is a small dose and I was wondering how to make the most of this trip

 

[Danny1265.dr]

Warning not recommended but any type of amphetamine