At Judaica Creations, we make special pockets to accommodate all those non Kedusha items. We were told since the thought was intended for this purpose, that was completely ok.

The whole issur of lo sachmod is when you lust after the same item that the other person has. You want that item, and nothing else will make you happy. And the reason Hashem doesn’t like it is that if you want it, that means you want the other person not to have it. עינו רעה בשל רעהו. There’s nothing wrong with wanting your own good, but you should also want his good. You shouldn’t want to deprive him of it just to satisfy yourself.

But there is absolutely nothing wrong with seeing that someone else has something nice, and deciding that you want one just like it. There’s nothing wrong with asking him where he bought it, how much it cost, how he likes it, etc., with the intention not of depriving him of it, but of getting another one for yourself. Because in such a case there is no עינו רעה. On the contrary, you are happy for him, and you hope that when you buy one he will be happy for you.

This distinction comes out most sharply with לא תחמוד אשת ריעך. You see someone has a beautiful wife, and you want her for yourself. Obviously this means you want to break up his marriage, rachmono litzlan. And obviously this is a very bad middah. It’s not surprising that Hashem forbade it, and put it in the asseres hadibros. But suppose that instead of wanting her, you inquire whether perhaps she has a single sister who looks like her. There’s nothing wrong with that! Aderaba, if it results in a shiduch, that would be wonderful.