Ok here is a quick idea from me
Get yourself a set of chains (ball or link whichever you like besy) Ball link doesn't need spinners but chain link is less likely to twist up with spinners. The chains can have quick links on the bottom. You can get fire heads, glow poi and fabric heads that attatch.
I have 2 sets of ball chains, one set slightly longer than the other, a set of fluffy poi heads, Cathedral fire wicks and some glow hacky sacks that I put in net bag to attach to the chains. I also use sock poi (basically some long socks with juggling balls inside them with a knot tied at the top for handles). I've made a set of cone poi but I used fabric that isn't very flexable so they aren't all that nice to spin even though they are quite pretty.
Glow poi and rain probably aren't that good a mix because I'm not too sure how waterproof any of them are as they have battery holes that don't in my experiance appear to be water tight.
I hope that helps a bit.... if not PM me and I'll try and clarify what I mean (my heads in the shed today so most of what I type is coming out meaning something to me but not a lot to anyone else

)