1. wrack your brain for any thoughts
if you think hard enough you'll eventually come up with something. write it down and save it for later - it may be useful in the future!
2. ask your friends for ideas
it's been proven (i think?) that you come up w better ideas if you're thinking for a project that's not necessarily your own. consult some friends to see if they can help with your dilemma!
3. consult the interwebs
visit that site that features rounded iridescent letters, a simplistic background, and a floating rectangle. it's called gewgul (google) - use it and see what comes up!
4. stop thinking so hard about it and distract yourself
you may come up with an idea when you're not directly working on the problem at hand! give it a shot - and you deserve a break, anyways.
5. make a comma post about how you can't come up w any ideas
and then make said post a five-step guide of methods to maybe inspire yourself to come up w said ideas. idk. i always have no ideas - why are you asking me for help? (lol)