Here goes.
I'm not too sure which exact cable ties were used, and I'm not sure which would be the best replacements, but I'd assume that the stronger the better.
The 1st one is a Fir Tree mount.
They can be bought with different max weight capabilities and lengths.
The best I found was here:
http://www.hellermanntyton.us/ProductDetail.aspx?p=157-00097If thats not the exact one, look through here, it'll show you all the other Fir Tree Mount ties with their max lengths and weight capabilities.
http://www.hellermanntyton.us/products.aspx?cat=1043Regarding the 3rd tie, I'm pretty sure its a type of arrowhead tie.
The best I found was this. Bear in mind it isn't the same, but it should do the job. Again, you can browse through their types. Some don't have pictures displayed, but they're all pretty similar.
http://www.hellermanntyton.us/ProductDetail.aspx?p=126-00603 (Black is also available).
The general category is here:
http://www.hellermanntyton.us/products.aspx?cat=1038I can't quite work out the 2nd one exactly from the picture. I'd assume its a type of screw in mount.
They can also be found on the same site.
Hope this helps.