As far as the foil tape goes...

I got mine at Home Depot. It was pricey ($8 I think), but I purchased 1 roll in February and I still have a LOT remaining. I use it on all my UTHs (7) and on top of my tank lids to hold the humidity (3) and now I use it to secure my temp-probes. I have gotten a lot out of that one roll. Well worth the $8 or whatever I paid.