I got tired of using Zip Ties to hold these bulbs to conduit.  The bulbs these are made for are sold by Holiday Coro and resemble C9 bulbs.  The conduit these are made for is 3/4" PVC electrical conduit.  I use this conduit around the edge of my yard supported by clips that use threaded rod holding the conduit.  I don't know where to buy these clips any longer but you can use any method you like to hold the conduit above the ground.  The bulbs are press fit into the holder.  I printed these in PTEG.  ABS might be better for outdoors but I don't have an enclosure on my printer.  I'll see how these hold up in the coming season.  You will need supports.  I used snug supports and printed with 20% infill.