to get voucher non mem fast get gold quickly (bunny quest) then do the assistant, i typically get one voucher non mem per day using this method.
For uni 13s, what i did was get diamonds in evilwarnul then buy crag n bamb to get over 50 uni 13s (bank glitch).
Otherwise you can also get uni 13s from the assistant, ~ 1 in 2 days avg drop rate for me.