I'd like to attach a magnetic, metal [knife rack](http://wholesale.norpro.com/index.php/15-s-s-magnetic-knife-bar.html) to a tile back splash in the kitchen of my rental apartment. The tile is glazed white and the attachment points on the rack are small (about 0.9 sq in of metal). The rack weighs 2.5lb and with the knives and a margin for error, we're looking at about 5.25lbs total weight.

Lsat week I asked for [guidance](https://diy.stackexchange.com/questions/52218) on choosing an adhesive, but that was roundly identified as a bad idea. Now I'm looking for alternatives. Since it's a rental, I'm not willing to break the tile (or risk breaking it).

* Could I drill into the grout?
* There are white formica wooden cabinets on either side, but I don't know how to drill into those in such a way that I could patch it later without being obvious.
* Could I use a horizontal tension rod between the cabinets?
* Could I use vertical tension rods between the sink and the cabinet above the sink?