I don't want to sound ungrateful; I need advice. 😞

So my mom has gotten into carpentry the last few years. I would say 75% of the time she makes really cool and ashtetically pleasing things... but 1/4 of the time it's not so cute. 
So she's been telling me for weeks now that she has surprises she's building for me. Apparently big surprises, because they were taking up her front room while she was making them, and now they're in her back room hiding. 
She won't tell me what they are, or anything, because she wants to surprise me.
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Ok so some back story is that I've always grown up with hand me downs, and less than perfect things (in fact we've been homeless when I was a child). Now that I'm older I've bought my own house and I'm having it remodeled to be brand new, modern, sleek, and minimalistic. I want my babies things to fit into that design- especially because we've converted our house from a 2(1/2 ish lol) room to a one bedroom (it's a large room). We'll be sharing a room with any babies we have until we can move out of state, into a bigger house, in five years.
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Now I'm totally worried my mom is making me large pieces of furniture for the baby. I'm already getting hand-me-downs from my step mil who just had a baby, and it's bothering me to no end. I want things that I Personally pick out, because it's my first baby, and I have a very specific style (and OCD-literally not figuritlvely- which makes it hard to accept things I don't deem as perfect or clean). 
I feel horrible because:
a) my grandmother just passed, so I know how much it means for my mom to have me be supportive, and accepting.
b) some people don't have mothers who care as much as she does.
c) I feel bad not accepting free gifts, because money will forever be tight when you have kids, and I know that.
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I just don't know what to do if she's making me clunky wooden gifts that she'll want to see in my house- even though I don't want those type of things in my house. I want simple modern clean minimalistic things. If it's like a rocking horse, or a toy chest, or something along those lines I could possibly work them in. If she's making like a bookshelf, or storage shelves, or a crib, or anything like that I highly doubt I can incorporate them in properly to our design.
I don't want to be a bitch, what do I do if I'm hating what she makes me? I love her so much I don't want to hurt her feelings. 😔