“Of of ideas” is like stating a fact which cannot change. I’d rather go for “feeling uninspired”, which everybody can experience now and then. In such a case, “just make music anyway” is IMHO pretty dangerous advice.
I’d settle for “meditate on Renoise” or perhaps “have a tool downloadathon” (the sex part being a bit offtopic)
render all the 4 pattern renoise “songs” that are resting on your harddrive to wav-files
import those wav-files as samples in a new renoise song
make a megamix by mixing all the wavs together and experiment like crazy
…or you could just start learning Lua scripting for Renoise…
In this order
-Clean computer desktop
-Open a beer
-Watch porn
-Eat a cookie
-Start renoise
5 imposed on 8.
3 cycled with 7.
16 with 24, expanded by 1 each time.
Add 1 when it counts.
Subtract 1 and hold on any.
0 is a valid expression.
7 relative to 7 possibilities.
I start (and never finish) a lot of 1-4 pattern songs, so this is also my preferred method for recycling those songs/beats into new material. 
+1, plus try to remake old songs.
other than this, just stay away from Renoise for a while
01 the body and the senses
02 feelings
03 place and change of place
04 measure and shape
05 living things
06 natural phenomena
07 behavior and the will
08 language
09 human society and institutions
10 values and ideals
11 arts
12 occupations and crafts
13 sports and amusements
14 the mind and ideas
15 science and technology
Dopamine and the frontal lobes
i don’t try to be creative when i’m out of ideas (the luxury of being an amateur i guess 
) but rather do i read up on something or play with an instrument or plug.
I wish i had an optional dog. 
you’ve got lots of ideas but your mind can’t accept them so you erase them from your memory, and repeat to yourself that you’ve got no ideas anymore, but it’s a kind of denial ; maybe these ideas are unacceptable, they go against you’re beliefs, your image, your position, or because they could not be understood by listeners. anyway, you’re ideas are rejected by the consciousness, because you’ve got a fear that they won’t be accepted by others, listeners, or yourself, and they finally are like born dead creatures. stop thinking that you allready know what is the good way or the bad way for your own musical life and developpement, music is not an opinion, it’s something that you do, that only happens in the present, and everything that goes out of your mind and under your fingers, can be the starting point of something interesting. open the doors with no judgment at all on everything that goes through your brain and hands, this aptitude to work with ‘something unallowed’, is what listeners hope to see and hear in secret from you, and if some listeners are too moronic, just create side projects so that you reach other listeners.
always works true wonders:
10 buy some hardware synth workstation, no matter how expensive
20 try to write a track with the internal arranger, sounds & fx
30 try harder
40 fail miserably
50 return to renoise
60 sell hardware synth workstation
70 goto 10
Eat shrooms, anything you do in Renoise will sound amazing. 
Try other daw, i did make many tunes in Studio one lately, but i got bored and jumped back to renoise hehe. Its kinda my way of changing environment from time to time.