Wow lot of kit for home, I've got a cross trainer at home and its huge, so I also have a cross misses if its not put away promptly... So I stick mostly to the gym.
The answer to what best routine really is what do you want to get from them?
I use the kit you list (not got a WII) for fitness, calorie burning and some high intensity work.
- I do mini- triathlons on the bike, x trainer and rowing machine. So I do 1000m row, 10k bike and 5k cross trainer. I record my time and helps see progress. MY heart is generally working at 80% of max with this.
- I also mix it up with sprint work, where I do short bursts (usually under 1m min) at max effort then with 30 secs rest/slowdown. This is a major calorie killer and build speed too. Check out HIIT on the interweb for why it works. My heart is at max (thats 220bpm minus my age)
- LSD, no not the drugs but Long Slow Distance. I pick one machine and do 45-60 mins at a lower intensity. Useful for when my knees need a break. My heart is at 60% of max around 136-8bpm.
There are cheapish heart rate monitors such as at ASDA and you can use these to help ensure you are in the right zone. Generally making your heart work in different zone is beneficial. Mixing it up not only stops boredom but tests your body and it responds by growing fitter more quickly.