Original recipe

I'm planning on experimenting with creating my own recipe shortly for my next brew. I'm still on extract brewing, since my apartment size and girlfriend won't let me change over to an all grain setup. But I was wondering a few things about it. Most of the kits that Ive used come with specialty grains to steep before I add my extract. What kind of grains should I look for as a specialty? Can I use pretty much any grain to steep or does it have to be a certain type?

Base malts are useless for steeping, as they require mashing. Stick with crystal and roast malts.

You don't have to go all-grain to use base malts (and starchy adjuncts, for that mater), of course. Partial mash requires no special equipment beyond what you likely already have:
https://www.homebrewtalk.com/f39/easy-partial-mash-brewing-pics-75231/