This is exactly what I mean by having more variations than you need.
If your just beginning Westside, you might stick with the same ME exercise for 2-3 weeks and only have 3-4 exercises you rotate through for both squat and deadlift.
The hard part isn't coming up with possibilities, but figuring which variations are the best for you. Also, this is a process that keeps going on. You milk a variation for all its worth, but you may find you have new weaknesses to bring up so you have discard the old and re-find the right variation for yourself.
If you're new to PLing in general, you'll probably want to pick variations somewhat close to the comp lift since you won't have any particular weaknesses.
Also, check out the Manta Ray. It changes the mechanics of the squat a lot and doesn't cost a fortune. It's not a bar, it's an attachment that goes on the bar.
Don't forget about box squats. You can use aerobics steps or a short plyo box in a commercial gym.