Custom Birthday Party Merch: Create Your Own

Some of the best birthday merch ideas to sell online combine customization, celebration, and comfort-making them perfect for any age or party theme. 

With Fourthwall’s product catalog, you can easily design and sell personalized birthday shirts, hoodies, and accessories for kids, adults, or group events-all with free shipping and no inventory hassle.

Here’s what you can customize and sell: 

• Custom Birthday Shirts: Personalize your shirts with age, names, or a fun birthday design like "50th Birthday Bash" or “Monster Truck Birthday.”
• Hoodies & Sweatshirts: Great for cool-weather parties, matching birthday crew outfits, or milestone birthdays like a 10th or 50th birthday.
• T-Shirts for Women, Men & Kids: Create rainbow birthday, toddler, or unisex party shirts in various colors and sizes.
• Hats & Beanies: Add a name or custom birthday theme for a unique party look.
• Tote Bags & Drinkware: Practical party favors that can be customized with slogans like “Aged to Perfection” or happy birthday messages.
• Stickers & Buttons: Great for younger party guests or as affordable add-ons to a main gift item.

With Fourthwall, you can offer high-quality, print-on-demand birthday merch that keeps your happy customers coming back for every special occasion!

When customizing your birthday merch, start by choosing a base item like a shirt, hoodie, or tee, then add the celebrant’s name, age, or a catchy slogan like “Bday Queen” or “Aged to Perfection.” 

Incorporate bright colors and playful graphics for toddler and kid items, while minimalist or milestone themes like “Birthday Vibes” and “40th Birthday” may be more suitable for teens and adults. 

Here are some other customization ideas to consider:

• Kids & Toddlers: Cartoon graphics, cute birthday designs, and soft shirts with their name and age.
• Teens: Trendy fonts, favorite colors, and funny bday sayings on unisex styles or shirts for women.
• Adults: Bold or classy styles like “Established 1984” or “Cheers to 40 Years” – great for party shirts or gifts.

Platforms like Fourthwall make it easy to design and sell with free shipping, fast cart checkout, and options that keep your happy customers coming back for more special occasions.

For any product from our product catalog, quality is guaranteed. Our team  manages all customer support on your behalf for these orders.

If there is a print error or visible quality issue with the order your supporter received, we’ll replace or refund it!

Because products are made to order, however, we do not accept general or sizing-related returns.

If you need help finding an artist or designer, check out our design community.

This is a vetted network of exceptional designers that can help you make great quality designs for your audience.

There are no monthly fees, no upfront costs, and no contracts to use Fourthwall. You set your prices and choose your own margins. Here is how our pricing and splits work when you sell:

• Products from our product catalog. The cost of a product from the product catalog (which you can monitor during the design process) gets deducted from the selling price you set. There are no extra percentages/margins. You keep the entire difference.
• Products you self-source. No fees

Additionally, all US-based credit card transactions have an added 2.9% + $0.30 payment processing fee (same as Shopify). Fees vary for PayPal and other providers. Learn more.

There are no requirements to join Fourthwall! Anyone can start for free, though the experience is optimized for people who have communities.

With platforms like Fourthwall, selling merchandise online to your fanbase is as easy as:

1. Selecting the products that you want to sell online
2. Uploading your designs
3. Building your e-commerce shop
4. Start promoting and selling

No inventory is required to sell many custom products like a phone case, shirt, or hoodie. Fourthwall also includes a professional mockup generator to get pixel-perfect results for quality before you start selling.

There are many great websites for selling merchandise. We think Fourthwall is the best way to sell to your fanbase online. It's the only one that gives you:

• Amazing quality products
• Drag & drop designs
• A no-code ecommerce site builder

All-in-one, so you don't have to compromise or install multiple tools. And Fourthwall does customer support on your behalf.

If you're curious about options, popular ones include:

• Printful (usually with Shopify)
• Printify (usually with Shopify)
• Spreadshop (Spreadshirt)
• Sellfy
• Redbubble