Hi,
At my local Wal-Mart on the as-seen-on-tv isle, there is a pretty cheap (I don't know how flimsy) steps that is for pets. It's looks something like:
http://www.amazon.com/SEEN-TV-DOGGY-.../dp/B000H7OBV0
Wal-Mart has a good return policy too if you find that it doesn't fit your needs.
Good Luck!