NAME BLOCKS
Here's an easy and colorful idea for your hammy's house or playground, no tools needed. Buy some children's wood alphabet blocks. Select the letters of your hammy's name, glue the sides of the blocks together, using a non-toxic glue. Allow the glue to dry and any smell to dissipate. Put the blocks in your hammy's house or playground for him/her to climb on.
Notes: Some of the blocks are painted yellow, I find this color doesn't show up well, so I paint over it with another color. Just be sure you use a non-toxic paint and let it dry well, as with the glue. Also, only one of each letter comes in a package of blocks, so if your hammies have multiples of the same letter in their name, as two of mine do, you may have to buy several packages of blocks.